#What are Varifocal Lenses?

[reglazemyspex]

What are Varifocal Lenses?

Varifocal lenses are a multifocal lens, also sometimes called progressives, Varis, or Multi-Focals. They contain a progression of focal power to help you see at different distances.

[needlesandnilbogs]

Everything I learn about American healthcare makes it worse lmao - insurance only covers the lenses? You're meant to what, hold them up to your eyes in your fuckin hands?

(Here, at least at the big chain opticians, we have to pay for our frames (though there may be exceptions if you're on certain benefits, can't remember); the lens is packaged in with that unless you want special treatment for them that makes them clearer/less flare-prone etc, or you have varifocals. There are usually like two frame options that are very cheap, £15 or so, and a couple more under £50, but if you're up for spending £70 you get 2 for 1. So I do that. Because I have a delicate baby head that can't deal with wearing the same pair of glasses for more than four hours or so. Also my mum always gets two and I've seen her be glad of it often enough to want to follow suit.)

this is about the glasses poll? I have really bad glasses insurance and my whole family has terrible eyes (I’m at -8 diopters, mom’s -4 and has the best eyes, dad’s at -10 or more, 2’s at -8 also, 3’s only ten and is at -4.5 or something), I know some people have better options because we’re on the absolute cheapest eye insurance from dad’s work. We get a $200 frame allowance or something every two years and a new pair of lenses every year, but have to pay for antiglare or blue screen light stuff or transition sunglasses lenses or whatever

it would be cheaper and more possible to get frames from Costco or something, but we all just have terrible eyes that nobody will make our lenses except the optometrist office so we need to get stuff through there.

[joy-cctv]

Panoramic cameras with varifocal lenses - See what you actually want to see!

Prama India launches a new varifocal panoramic camera with 4 flexible lenses. This camera can be very useful for Banks, Showrooms, Banquets and all the organizations having large close or open area monitoring requirements.

Varifocal lenses help customers to adjust the angle and focus of individual lens to monitor particular area in the surrounding. Camera comes with 30m IR range and IP67 certification which is dust and waterproof.

It also comes with smart AI enabled features like 6 types of behavior analyses, 4 types of exception detection, and face detection.

Feel free to contact us to know more about the product.

https://joyelectronics.in/contact-us

#joyelectronics #LatestTrendsinCCTV #CCTVinAhmedabad #CCTV #CCTVCameraInstallerInAhmedabad #SecuritySystemsinAhmedabad #CAMERADealerinAhmedabad #CCTVInstallationProviderinAhmedabad

[morrisandgill]

What exactly are varifocal lenses?

Varifocal lenses (also known as progressive lenses) have multiple points of focus. This means that the focus shifts as you move your gaze through the lens. This type of lens is typically required when you lose your ability to see far and near with single vision lenses. It is frequently used to treat presbyopia.

[collectormains]

Darkfighter hikvision

It has excellent performance of low light and is powered by DarkFighter technology. This camera’s quality is perfect due to its 2 MP resolution. Motion Detection4 programmable motion areasĢ- Best Hikvision DarkFighter (Night Vision) Camera Hikvision 5-inch 2 MP 25X Powered by DarkFighter IR Analog Speed Dome-DS-2AE5225TI-A.Privacy Mask4 programmable privacy masks.AE (Auto Exposure) ModeWDR BLC HLC Global HLS.Light AlarmSolid Light Alarm (White Light).3.6 mm, horizontal FOV: 93°, vertical FOV: 48°, diagonal FOV: 113°.2.8 mm, horizontal FOV: 110°, vertical FOV: 59°, diagonal FOV: 131°.Illumination0.0005 AGC ON), 0 Lux with white light High quality imaging with 8 MP resolution.Efficient H.265+ compression technology.Clear imaging against strong back light due to 130 dB WDR technology.Focusing on human and vehicle classification based on deep learning.Recycling companies face a major risk of fire, but our new product has resolved this problem with the technology of advanced fire detection. HeatPro Bi-spectrum thermal cameras deliver advanced fire detection for waste recycling facilities. The 2nd Gen value IP cameras and AcuSense NVRs have been upgraded with the latest functionality. The upgraded value of the best Hikvision camera and AcuSense NVRs provide enhanced key features for simple and efficient user experience. It includes 2.8 mm and 3.6 mm lens and more than 40 m white light distance to have a brighter picture at night. On the other hand, its 3D DNR technology makes you have clean and sharp images. This feature is because of its 130 dB true WDR technology. Its colour imaging is 24/7 and it takes clear pictures against a strong backlight. Hikvision 4K ColorVu PoC Fixed Turret Camera – DS-2CE72UF3T-EĪ camera that gives you high-quality imaging. Here are more details about these four main features of the company’s productions. Here are some of the new products of the company for 2022. You can enjoy having the best pictures and films from your best moments of life. The used technology in these cameras is so exciting and attractive that can persuade every user. These cameras can provide vivid colourful imaging, even in darkness.īy the way, every year Hikvision tries to make the best kinds of cameras & hikvision NVR or hikvisoin DVR for customers in the UK and all over the world. The new models feature ColorVu Technology, DarkFighter Technology, the technology of 4K and also the technology of PTZ. As a user, you will see everything with the best Hikvision CCTV Camera and will miss nothing at any instant, you can enjoy it from the moment you set the camera up. This new type of camera will be exclusive that will provide you big picture with small details which will inspire its name. This company makes unique and advanced cameras and its next-generation cameras will have the best technology, including a bullet camera and a PTZ camera in one unit. This company is the producer of the best Hikvision camera in many cities including Manchester. This IP device, Compatible with Onvif and PSIA to seamlessly integrate with other video surveillance systems and equipment, has PoE power.Hikvision is a great and famous company in the UK and is one of the best producers of cameras in the world. Its varifocal optics and choice of wide-angle and telephoto lenses feature the auto back focus function (Abf) to provide an optimal approach by automatically adjusting the sensor position. Hikvision DarkFighter DS-2CD6026FHWD streams video images at 1,080p at 60fps in H.264 format, MPEG4 and MJPEG, and features 129db WDR and 3d DNR digital noise reduction. This night vision and daytime system automatically changes color to black and white when light is reduced without reducing its performance, for what uses IR infrared lights and fog function in case of adverse environmental conditions. The new DarkFighter DS-2CD6026FHWD network camera Hikvision equips a high-sensitivity CMOS sensor 2 to ensure the capture and recording of sharp color images up to 0,002 Lux and 0,0002 Lux in black and white in indoor and outdoor installations with virtually no lighting. up to 0,002 Lux in color to offer video surveillance in conditions of no illumination. Hikvision DarkFighter: high-performance video surveillance in zero-light conditions Equipped with ultra-low luminosity MP lenses, Hikvision's new DarkFighter DS-2CD6026FHWD IP camera ensures sharp image capture, day and night.

[pers-books]

Sorry u need cheering up! What happened to make ur Monday so bad? :( :( :(

Two years after menopause began, I am having a period. This is not a good thing as it could be a symptom of cancer. I have a doctor's appointment this morning to sort out about tests to ascertain a probable cause.

So that's a great start to my week. A week which also features a f2f appointment tomorrow with the diabetes nurse and - at some point this week - a f2f meeting to collect my new glasses, which they've had to redo the lenses on because they fucked up the size of the area that covers close and middle-distance vision (I wear varifocals). So that's 3x the panic attacks I was anticipating having this week.

[reflectionsofneptune]

little thoughts on the planet Neptune

Desire. 

That’s the word that comes to mind when I think of the planet Neptune.

Desire isn’t inherently a ‘bad’ emotion to feel. It isn’t wrong to desire a partner that meets a certain criteria. Or desire a world in which peace is a prominent common thread linking one person to another. Or just desire a better life for yourself and your loved ones. 

With desire usually comes action to produce a specific outcome. 

Decisions that positively impact those around them for the better can be one way it manifests. Neptune in the earth signs signifies the blending of the material and spiritual world. Making sure the practical things in your life, whether it be the food that you eat or the career you pursue, align with you on a soul level.

Neptune’s placement in the birth chart shows where we can bend over backwards for other people and put their well-being over our own. Often times it’s not done from a place of the ego, but because we tend to see the good in people here, whether it is justified or not. Sometimes we need to swap out the rose-coloured lenses for some good old varifocals.

Fantasy.

Neptune blurs boundaries. Heightens sensitivity. Can amp up confusion. Open the door to imagination but leave you no breadcrumbs to find your way back.

Forget the Sun for a minute, this planet can really steal the show. Photography, music, film, art, beauty all come under its domain. These outlets can transport you to a different time, or trigger memories deep within your unconscious.

Although things can be very much glamour and glitz, Neptune is also able to refine what it show you. Being such a porous energy, it can transform into a situation where your greatest vision come to life and all you need to do is sign on the dotted line. But, you know the small print is there for a reason, right?

If you don’t ground yourself where this planet is concerned it can cause you to struggle with differentiating fact from faction. Chaos and confusion. Paranoia and delusion. Sticky situations.

The higher octave of Venus, Neptune shows you where you need to lead with love. 

And be ten toes down while doing so.

/more little thoughts

[reglazemyspex]

WHAT IS THE DIFFERENCE BETWEEN BIFOCAL AND VARIFOCAL LENSES?

When buying varifocal or bifocal lenses, knowing what each one does and which is the best for you can save you time and money!

[zonecarbon09]

What'S So Important With Lens And Frames?

Why Are Titanium Frames So Expensive?

Content

Can Make-Up Misbehave For Our Eyes?

Elle Brown Blue Tortoise Gold Arms Round Circular Spectacles Frames El14401 Db 145.

Lens Colour.

Use Flexon Tablet

For How Long Does It Take To Obtain Glasses From Walmart Vision Facility?

Exactly How To Order Substitute Lenses For Your Existing Frames.

Finished Lenses.

Blupond Evening Driving Glasses Yellow Tint

The two wide prescription categories are solitary vision and multifocal. If you have a very solid prescription, you need to consider ultra thin high index 1.74 lenses. By routinely cleansing crystal lenses, one will certainly maintain their Ray-Ban sunglasses looking as sharp as they did when they were initial purchased.

Can Makeup Misbehave For Our Eyes?

It's just like the 1.50 standard-index single-vision lens, other than it has the bifocal segment. This lens is good for SPHs of -3.00/ +1.50 or reduced with CYLs of +/- 6.00 as well as an ADD of +3.50 or reduced. On top of that, the 1.59 pure polycarbonate lens has a tendency to damage more conveniently than the 1.50, 1.57, as well as 1.53 lenses, because it's a softer lens material. Likewise free with single-vision prescriptions is the 1.57 mid-index lens. This lens is frequently described as "polycarbonate compound," because along with polycarbonate the lens is composed of other polymers and also resins that keep the lens thinner than the 1.50 lens.

Why is Maui Jim so expensive?

They are not made on Maui, there is no Maui Jim. It's an advertising hoax. They are so expensive because they can get fools to pay too much so they can impress their friends with a super expensive pair of $30 glasses.

Solitary vision lenses have the exact same prescription power throughout the entire lens. Perfect for fixing myopia (near-sightedness) and hyperopia (far-sightedness).

Elle Brown Blue Tortoise Gold Arms Round Circular Eyeglass Frames El14401 Db 145.

Inexpensive analysis glasses are just excellent as an alternative backup set, which are just used for short periods of time. If you simply require to throw on a set to check out a label, that's penalty, yet they are most likely to cause problems with even more substantial use. Every person is constructed differently, and even small differences can considerably impact how well the lenses work. You could obtain lucky and also find a pair that just take place to fit your head well, however a real eye doctor can ensure a proper fit. If you're over 40, checking out glasses can be a necessity, and also they serve double duty as a style accessory.

occupational glass lens "/>

Just like single-vision high-index lenses, an anti-reflection coating is recommended for high-index bifocal lenses. Among the bifocal lenses we offer is the 1.50 standard-index bifocal lens in CR-39 plastic.

Lens Colour.

Its range is -4.00/ +2.00 or reduced on the SPH and +/- 6.00 or reduced on the CYL. CR-39 plastic is a polymer that gets its name due to the fact that it was the 39th formula of a plastic developed by the Columbia Materials (therefore "CR") task in 1940. The first use this plastic was to aid create glass-reinforced plastic gas storage tanks for the B-17 bomber in The second world war.

Try our Frame Browse page to look through our huge stock for frames with your certain demands, such as frame size, product, and also form.

If you simply wish to redo your existing lenses, you do not require to send the prescription in since we can read your prescription from your old lenses.

Nonetheless, sometimes a frame will damage while we are mounting lenses and also we can not be called to account if this occurs to your frame.

After we get your bundle, we will call you to complete the order.

Having an up-to-date prescription is extremely important - it will assist direct your choice as well as let you understand specifically what you need from a lens.

We ship the frame to you, and also you can take it to your neighborhood optical store to have actually lenses installed.

We will certainly try to replace your frame at on the house; if that is not possible, we will certainly supply you a 50% discount to buy an additional frame from our website.

With boosting need functioning within smaller atmospheres, these lenses are coming to be 'first choice' in providing a far more enhanced visual experience. Occupational/Degressive lenses are commonly used terms to refer to varifocal/progressive lenses specifically designed for usage in limited job areas. It generally provides significantly bigger aesthetic passages than traditional varifocal lenses. These classifications of lenses are guaranteed to supply extremely clear vision for the computer as well as near work, however, for distances no even more than 4 meters at severe.

Just like single-vision lenses, anti-reflection finishes are advised with high-index lenses. The 1.50 standard-index progressive CR-39 plastic lens covers SPHs of -2.00/ +1.00 or lower with CYLs of +/- 6.00 or reduced, and also an ADD power of +3.00 or lower. The 1.57 mid-index progressive polymer lens covers SPHs of -4.00/ +2.00 or lower, CYLs of +/- 6.00 or reduced, as well as an ADD power of +3.50 or reduced.

Use Flexon Tablet

How Long Does It Require To Get Glasses From Walmart Vision Center?

This is particularly true as the lenses grow older and deposits accumulate on the front and back surfaces of the lenses. You can find Crizal lenses on internet sites like ebay.com, however you will certainly require to be careful concerning which supplier you select to avoid counterfeits. Essilor has a directory you can use to discover areas near you that offer Crizal lenses.

How To Order Replacement Lenses For Your Present Frames.

Are blue lenses good for driving?

Blue glasses are not suitable for driving, while yellow sunglass lenses are really good for sharpening up images, but causes more colour distortion. Brown lenses reduce glare sufficiently well, including absorbing the blue frequency of light in the sun's rays, which makes your surroundings seem hazy.

Thankfully, cleaning crystal lenses needs no greater than a mixture of cozy, soapy water and also a lint-free fabric. Permitting sunglasses to soak for 5-10 mins is handy in eliminating any kind of germs that has actually collected on the lens surface. The expression 20/20 is a Snellen fraction, named for Dr. Herman Snellen who developed the visual acuity gauging system in 1862. The top number never alters; it's always 20, which is the range in feet (in the U.S) that the individual is from the eye chart. The bottom number shows how plainly you see things at a range.

In a flashlight, it's much easier to do this task with a mirror, which typically considers much less than a lens and is cheaper to produce too. Our New Berlin lens laboratory is the first in North America to take on environmentally-friendly prescription lens making modern technology. Wisconsin Vision is leading the way in making optical lens production more secure as well as greener with alloy-free lenses. lenses have excellent optical top qualities, are scratch resistant and also normally expense less than plastic.

Progressive lenses have no lines, so if you're seeking a lens without lines, these are for you. They feature the appearance of a single-vision lens as well as permit you to see in all distances. Let's have a look at the distinctions between dynamic and bifocal lenses to help you determine which is best for you.

Why are Oakleys not suitable for driving?

Oakley Collector According to the AS/NZS1067:2003 standard, lenses are banned for use when driving if they provide "very high sunglare reduction", so the ban seems to be based on light transmission levels.

Mirror finishing on sunglass lenses not just looks cool, it can enhance aesthetic convenience in extreme light problems. While absolutely About us Top Specs Opticians Aylesbury can make optical lenses scratch-proof, an anti-scratch finish makes the surface area much harder as well as much more sturdy. Normally, a choice of lenses is offered providing top quality vision at differing functioning distances. Generally, they are available from 1 metre intermediate setups to 4 metres with a very smooth progression to the close to zone over a shorter range making the shift a lot more effective.

What are driving glasses?

Driving glasses reduce glare Sunglasses for driving feature polarized lenses that reduce glare and make it easier to see in bright sunlight. Drivers who have been in accidents often claim that they couldn't see the other car or a pedestrian because of glare reflecting off the road or the sun shining in their eyes.

This efficiently implies that you don't need to acquire two pairs of glasses for 2 various ranges. Call us and we can look at the advantages and disadvantages for you specifically relating to the anti-reflective covering in addition to other choices for your brand-new glasses. Whether you have the finish or otherwise also may affect your future glasses acquiring.

Be-cause they are cost-effective and also readily available in a wide array of designs-- and quickly misplaced-- you may get them by the handful. Yet, you might be better off purchasing a specialist eye examination instead. You can additionally customize the lenses to fit your specific prescription and also preferences. I was asked about my face size, frame shape preferences, preferred shades and also materials, the date of last eye examination as well as whether I wanted sunglasses recommendations.

What is the best color sunglass lens for driving?

Although gray and green lenses have their own benefits, and colorful lenses are fun, copper and amber tints increase contrast, making them the best options for driving. If you're looking for a crisp, clear view, we suggest finding a pair of shades with amber or copper lenses – and extra points if they're polarized.

Right here are our specific single-vision lenses, with the prescriptions they fit. A little section of glasses wearers have prism adjustments on their prescription. We can fill up these for single-vision prescriptions up to 5.00 in any type of base instructions.

Glass lenses are not widely utilized since they are larger and damage even more easily than plastic. a greater refractive index than CR-39 plastic, making the lenses thinner and lighter. Dynamic lenses are coming to be a significantly popular choice over bifocals and trifocals. Progressive lenses right vision at close to, middle as well as far distances with no "change area" or visible divide.

Some customers may rather gain from choosing another sort of lens. The concept of using man-made lenses rather than eyeglasses dates back to a minimum of the 19th century. Scooped lenses are utilized in things like TV projectors to make light rays expanded into the range.

Avoid over-wearing your contact lenses and also make sure to dispose of and change them as guided by youreye doctor. You can substantially lower the threat of contact lens-related eye infections by appropriately cleaning and also sanitizing your contacts after each use. Use only thecontact lens remedies your ophthalmologist advises, and don't transform brands without very first consulting with your doctor. Contact lenses also increase the danger of eye damages since bacteria as well as various other infection-causing agents can build up on them.

Blupond Night Driving Glasses Yellow Color

If you're not able to review the 4th row from all-time low as well as you go up a row, you have 20/25 vision. On the other hand, if the lower numbers decrease, your vision is superior to the typical 20/20.

[luyenvanbac]

Top 9 Best Range Wireless Security Camera System of 2019

An Actionable Tutorial on Wireless Wifi Camera System in Step by Step Order

If you must place a camera outdoors, lắp camera pick the Arlo Pro. If this is the case, you will have to obtain a security camera. A varifocal lens security camera with a very long range permits you to zoom in to view additional information, and zoom out to find a larger area. Wider angled lenses help cut back on the range of cameras necessary for overall coverage of your premises. For example, you want a camera that's very simple to prepare and use. There's much that should be considered before purchasing the most effective wireless security camera for your personal requirements.

You are able to still get HD quality video regardless of what the weather is. Some cameras enable you to make direct connections to Facebook or other social media websites, too, which can be a terrific feature. The Canary Flex Indoor Outdoor Security Camera takes care of that possible problem by supplying a whole 360-degree swivel ability, so that you can view a wider assortment of space with a single camera.

What Wireless Wifi Camera System Is - and What it Is Not

To learn a lengthy range outdoor video security camera including all the advanced features isn't a simple job. If you're in need of a neat surveillance camera and you're on a strict budget, then TENVIS JPT3815W may be the answer. Getting in a position to ensure the access with a password will assist in keeping the security system unhacked. Both the capability of day-to-day connection to your residence and family and the stepped up protection from intruders help it become beneficial for nearly anyone. Although capabilities change from device to device, indoor security cameras permit you to monitor what's happening in your house through live or recorded video.

Whether you have or rent your house, there's an outdoor security camera solution for everybody. By way of example, build a wooden box around it and stain or side the box so that it blends into the house, or even make it resemble a birdhouse. You will have the ability to monitor everything that's happening from your office or house by just checking your mobile phone.

The Essentials of Wireless Wifi Camera System That You Will be Able to Benefit From Starting Immediately

Camera giám sát giá rẻ The system you select will be contingent upon your finances, your house's layout, your climate, your security concerns, and other facets. The Professional Smart HD security camera system isn't hard to use, trustworthy and secure. Unfortunately, there's no control over how much it is possible to zoom. The system might also be programmed to send alerts via email as it's not realistic to discover the video footages on the monitor each time. The ideal thing about a house video surveillance process is the excess sets of eyes. Before you put in a wireless home security camera system, do some research and assess your house and its requirements.

In the event the cameras are meant for concealing, selecting a stealthier looking unit is the best way to go. The majority of the IP cameras on the market are digital, but you're never going to fail to find one with optical zoom. It's essential that the camera resembles something you really want in your house, but based on your requirements, you might not want it to stand out too much. Cameras which use only local storage also run the chance of losing any recorded video in the event the camera itself is stolen. Also, bear in mind that the cameras here are intended to help you keep tabs on what's happening inside your home. The wireless indoor camera can be connected straight to your computer, laptop or tablets so that you are able to see what is happening within your bedroom or living room, anytime and any place in the world. Possessing the very best outdoor WiFi security cameras will make sure you are going to have peace of mind and protection Outdoor security cameras frequently have a very simple design.

Wireless Wifi Camera System Fundamentals Explained

Surveillance cameras can eat up a great deal of energy, lắp đặt camera trọn gói giá rẻ but if you discover a model that only records when motion is detected, it can help decrease operating expenses. Many outdoor surveillance cameras available today are in a position to live stream a feed straight to your cellular device. A microphone is a great option should the owner wish to be in a position to speak to the man appearing in the frame of the camera. A mike and speaker provide two-way audio, which likewise receives a boost courtesy of an improved audio amplifier. My camera isn't directly in sunlight, so I am unable to comment on the way that it is in direct sunlight all day. You can have a lot of cameras installed and still find high high quality images, whenever you want it. Individuals that are looking for solar-powered CCTV cameras or solar-powered WiFi cameras hope to keep your eye on areas that power socket is unavailable or running power cables is impossible.

[fuck-customers]

Long post: TL;DR at the end!

I work at a very popular opticians in England and, although I'm quite new, what I'm about to tell you about has happened a number of time and I'm still amazed it does. I'll talk about the first time tho bc it was honestly the worst. So a lady came in to collect her new glasses. She puts them on, we check the vision, she can read perfectly with them, check the fit. All good, all happy, so we send her away with them. I'm gonna call her Mrs. S for the rest of this. That night, at maybe 5:20, so about 10 minutes before we close, we get a phone call and it's Mrs. S. You know it's gonna be an exciting situation when they start their phone call or visit with 'so I picked up my glasses today'. And this is how the phone call went: Mrs. S: 'So I picked up my glasses today and they were fine earlier but now I can't see with them at all!' Me: 'Oh, that's odd! Can I take your information so I can just find your record on our system and have a look at the glasses we've done for you?' She gives me her info, and I find that she picked up her glasses today indeed. A pair of reading glasses. Me: 'So what exactly is the issue you're having?' Mrs. S: 'Well they're fine when I'm reading, but then when I look up, everything is blurry!' It took about 30 seconds of awkward silence for me to process what she'd actually said to me. Me: 'So. Your reading glasses. They work perfectly for reading. But you can't see anything else with them.' Mrs. S: 'Yes!' Me, probably a bit too sarcastically: 'And you're aware they're.. reading glasses?' Mrs. S: 'Of course I am! What difference does that make?' Me: 'Well, they're reading glasses. They have your near vision prescription in them for close up work.. Like reading.' Mrs. S: 'But why can't I see everything with them? The prescription must be wrong!' Me: 'You have three prescriptions, your near, intermediate and distance and the only way to get glasses that have all three in them is if you get varifocals, or bifocals if you wanted just distance and near. Or we could have done you a distance pair as well as your reading. Were you told about this before?' Mrs. S: 'Yes, but the vari things were ridiculously expensive and I didn't want two pairs so I didn't want any of those!' Me: 'I'm afraid without upgrading to a varifocal lens, there's no way we can make you see at all distances with your reading glasses.' Mrs. S: 'So you just want me to give you more money. This is ridiculous, I want to speak to a manager right now!' The closest thing to a manager we had in store at that time was our store director, who's also our dispensing optician. I'll call her R. So I put Mrs. S on hold and explain to R what the situation was. She also had to take a good while to process what happened before taking the call. She took a good 20 minutes explaining to Mrs. S about why she needed three different prescriptions and how it's not 'all a scheme to swindle more money out of me!!!'. I'll explain here as well for people who don't know, but when you get older, you get 'presbyopic', which means that over time, the lenses in your eyes hardens so they struggles to focus properly on things at different distances, so you need a prescription for distance, intermediate (computer distance, essentially) and reading. If it wasn't obvious, Mrs. S was a just-past-middle-aged lady. So, after explaining this two or three times and Mrs. S still refusing varifocals, the conversation too a fun turn: R: 'Look, we are closed now, so how about I book you an appointment to come and see me tomorrow and we can talk this through properly and work out what's best for you.' Mrs. S: 'Well, I'd rather see someone who's actually qualified, like an optician.' R, after taking a second or two to control her seething anger: 'Ma'am. I am a fully qualified dispensing optician. You can come and see me.' The phone went oddly quiet after this. But Mrs. S booked her appointment and came in the next day. It took another 5 or so rounds of explaining for her to finally understand that it was a distance pair or varifocals, and she begrudgingly ended up buying varifocals because it would be too much of a hassle for her poor self to switch between two pairs of glasses all the time. Then when she came to collect her new varifocals, she spent the whole collection telling us about how much she spent on them. Yep, that's nice. You can see everything? Good. Now please get out my shop and hopefully take your business elsewhere. Trouble with being the cheapest optician on the high street, they tend to come crawling back to you. TL;DR: lady just couldn't understand why she couldn't see all around with her READING glasses, yelled over the phone and me and our dispensing optician and ended up buying the more expensive solution bc she hates hassle. Ironic.

[buzzair]

Dahua vs. Hikvision: How to Make a Good Choice?

IP cameras appeared as an innovation in the security business, offering excellent features to clients who need high-resolution footage for lower prices.

Although initially, these type of CCTV cameras were of low-range, with fixed lenses and very limited options, companies like Dahua and Hikvision launched CCTV camera models with the features of high-range products, such as remote focus, powerful zooming, and high-quality audio, all of it for prices that were below the usual range.

Hikvision appeared in the surveillance market in 2001 and its success soon followed, becoming the leader of security technologies.

On the other hand, Dahua Technology, also founded in 2001, holds the second largest market share.

Both companies have dedicated their work to satisfy the requirements of those clients who look for quality solutions for the lowest price possible, that is, the most cost-effective options of the market.

Today, Dahua and Hikvision are practically must-be choices when it comes to a list of surveillance equipment providers. By offering similar products, these two companies frequently are hard to differentiate, so that is necessary to talk about the small but existing differences between them in order to help consumers make an informed purchase decision.

Understanding the main features of IP cameras

If you need to make a decision regarding which camera should you purchase, it is essential that you have a general idea of what do their features mean.

Therefore, before comparing both brands, we think it is important to explain at least the main characteristics of an IP camera.

1. The range of Vision/Lens

This is a measure of the angle that can be covered by the IP camera. There are varifocal lenses that have a range of vision that can be lowered or increased. On the other hand, there are fixed lenses that can only offer an invariable angle.

Usually, a 2.8 mm lens opens 90-105°, making the range of vision go from wall to wall and a good quality image up to a linear distance of about 5-8 meters (focal length). The higher the number in millimeters, the narrower the angle of coverage is, but the longer the distance is covered.

Both brands of Hikvision and Dahua offer a variety of fixed and vari-focal lenses with their respective focal lengths, ranging from 2.8mm to even a few hundred millimeters.

2. IP Camera Zoom

First of all, there are two types of zooms: digital zoom and optical zoom.

Security IP cameras with a resolution of 1080p (and higher) include a digital zoom. This feature is more efficient as the resolution goes higher, because with lower resolution cameras, the image gets pixilated when trying to zoom in for details.

The motorized vari-focal zoom function is highly useful. It allows users to adjust the coverage distance and the angle of coverage after installation. This Dahua 4MP IP Camera package includes the motorized vari-focal function.

3. Size of the Sensor in the IP Cameras

This feature has a big influence on the capability of the camera to record quality images even in low-light conditions. Generally speaking, the larger sensor in the IP camera will have a better performance in dark scenes.

With a small sensor, pixels get crammed resulting in a lot of noise and consequently, a poorly detailed image. On the other hand, larger sensor size will allow more pixels to be part of the image, reducing the noise and offering more sharpness.

Both brands of Dahua and Hikvision support a good level of minimum illumination but Dahua has an advantage in some models thanks to the superior sensors they use, which allows a better night view with Starvis® and Darkfighter® technology.

4. Bitrate of the IP Cameras

The bitrate of a security camera describes the number of bits moving from one point to another in a network per second. Bitrate is measured in kilobits per second (Kbps) or megabits per second (Mbps).

For IP cameras, this number of bits include video and audio. For higher capacity cameras, bitrate is often measured in Mbps.

The maximum bitrate in Hikvision IP Camera can go to 12Mbps. Dahua’s maximum bitrate usually reaches 10 Mbps, although it is said that a bit rate of 10 Mbps is quite good for the usual needs.

5. Motion/Face detection

This is a desirable feature in surveillance systems. Motion detection is possible thanks to the comparison of consecutive images that the camera “understands” as the occurrence of movement in the scene under surveillance.

When IP cameras include the motion/face detection feature, there is a significant saving of storage space. Time is also saved since it makes the review of recorded images faster since it is possible to go directly to the scenes where movement occurs.

Facial detection in IP cameras is mostly used by companies, offices, buildings, houses and organizations that need to record the physical details of the people moving about. The inclusion of this feature in IP cameras can be quite helpful nowadays.

All the models from Hikvision and Dahua offer motion detection functions; while quite a large number of models from Hikvision and Dahua offer the function of face detection.

6. Simultaneous video streams

Both Dahua and Hikvision IP cameras come with the feature of “multiple video stream” which allows the output of more than one video streams at the same time. Different settings can be defined for each output regarding resolution, bitrate and other aspects.

The possibility of sending different and independent streams is a great advantage. Most of the Hikvision IP Cameras have dual streams (one main and one sub); while most Dahua IP Cameras have triple video streams (one main and two subs).

7. Missing Object Detection, Audio Detection, Scene Change Detections, etc

These are the smart functions included in most of the IP cameras of Hikvision and Dahua. They can be particularly helpful when there are such specific needs, such as you need to monitor a specific object like an expensive item in a store. If the camera detects the object is missing from the scene, it starts to record immediately and sends an alert to the system manager.

The possibility of detecting noises with your IP camera can be useful when you need the most detail about the area under surveillance. In some situations, it can be helpful to detect car alarms, objects being hit or broken, people screaming, etc. Those IP Cameras include audio detection that immediately sends an alert via email or smartphone to the security manager so that an action is taken. The camera should also be directed towards the place where the noise comes from.

Both Dahua and Hikvision have certain models that include these features.

8. Maximum Resolution

Camera resolution indicates how detailed the image will be. The higher the resolution, the better, and of course, the cost will be higher. Resolution is given by the measure of the images recorded by the camera. This measure is made in pixels (width x height) and it is also referenced as the multiplication of both numbers followed by the letters “MP”. Most of the IP camera models for both companies range between 1MP and 4K (8MP) but there are some models with even higher resolutions.

Which brand should you buy, Hikvision or Dahua?

This is a very particular decision. Since most of Dahua and Hikvision products are similar, the key is to define your specific needs and make a review of the functions each model offer in that regard.

As for the price, both brands offer very similar prices in most of their product variety, which is very competitive when compared to the rest of brands in the market. The good news is, whatever your choice is, you can be sure of purchasing high-tech equipment from one of the two leading brands of surveillance systems in the world.

Contributed By CCTV Camera, CCTV Camera Singapore, and Safe Box Singapore

The post Dahua vs. Hikvision: How to Make a Good Choice? appeared first on CCTV Camera, IP Camera, CCTV Singapore.

source https://cctvcamera.com.sg/dahua-hikvision-make-good-choice/

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Why set up a residence security camera technique outside the house your home

Residential video surveillance installation Do you want to know what’s going on in your property even when you are not there? Of training course, you do. One particular of the very best approaches to do this is by putting in a security digital camera. In accordance to a latest examine, most burglars are deterred by the sight of a security camera. No matter whether you are preparing to have your stability cameras set up by a skilled or a do-it-your self installation, you’ll want to know how to choose the correct cameras and the very best areas to set up your protection cameras. Click on on a segment beneath or hold looking through to understand more about how to safely and securely install protection cameras in your residence. 5 ideal places to install property safety cameras Do-it-yourself stability digicam set up 101 Benefits of skilled set up Best indoor and out of doors security cameras to set up 5 greatest spots to set up residence stability cameras Picking the right spots to install your cameras is as crucial as obtaining the proper cameras for your property. To do so, it’s greatest to stroll through your house with your protection goals in thoughts. Consider spots like very first story home windows, garage doorways or even basements as details of entry that would be most interesting to burglars. Another good idea for camera placement is to set up genuine cameras out of get to (and possibly out of sight). Then, place authentic-hunting dummy cameras about your residence. That way, if an intruder does split one particular of your cameras, it’ll be an inexpensive dummy—and you are going to have a movie of the act. Here are 5 spots you must always set up a house surveillance digital camera: Entrance doorring-peephole-protection-digicam An approximated 34% of all burglars enter your residence by way of the entrance doorway, so you’ll want to teach 1 of your surveillance cameras here. To avoid an intruder from tampering with your digicam, area it at 2nd-floor degree, or even in the eves of your home, and focus it on the front door. If your home has just 1 degree, think about enclosing your front doorway digital camera in mesh wiring to defend it from errant rocks, sticks or other weapons. Professional tip: You can put in a peephole digicam, so you can see who’s knocking prior to you open up the doorway. Ring Wi-Fi enabled video clip doorbell is one particular of the greatest-rated peephole cameras, with practically twenty five,000 reviews and 4 stars on Amazon. Back again doorsunba-outdoor-security-digital camera One more 22% of home burglars enter by way of the again and facet doorways, so you will want cameras right here, as well. It’s crucial to arm every single entry door with a digicam. Again, make the energy to spot your digital camera out of the reach of human arms, or to defend it from anything at all an intruder may possibly throw at it. Specialist tip: Be confident to set up a digital camera which is equally weatherproof and is outfitted with night time vision. The SUNBA out of doors security digicam is a single of the ideal out there, with up to 800 feet of night vision, audio and 20x optical zoom. This camera can pan 360-degrees and tilt up to ninety-degrees. Off-street windowsuniden-security-cameras Burglars typically enter a residence by breaking a rear window. By selecting a window that is not in direct check out of the avenue, they reduce their possibility of currently being caught. Positioning cameras at rear windows will let you to catch any thieves who may be out of see of the road. Specialist suggestion: Your greatest choice here is to install a wi-fi protection camera that has remote control capabilities and can be operated from a mobile device or tablet. Rated 4.5 stars on Amazon, Uniden’s High definition cameras with check established is a excellent alternative to incorporate additional protection to entry details like home windows. Yard and side gatebackyard-stability-system Things like high-priced garden & yard machinery and kids’ bikes remaining out can attract burglars to your property. Be sure to arm your lawn with movement-sensor floodlights and a night time vision surveillance digital camera. If your backyard is fenced in, make positive your digital camera has a look at of the entrance gate (or put in a second digicam there). Skilled idea: Area a camera in basic sight. Usually, just seeing a safety digicam is ample to make a property intruder transfer on to an additional home. From a price perspective, ZMODO can make some of the most affordable however hugely-rated yard stability programs. Basement stairstenvis-surveillance-digital camera Numerous basements have obtain hatches/doorways, or at least little windows that are big ample to crawl through. Place a digicam on the stairs top up from the basement to your home to report any thieves who may crack into your residence by means of a basement window or other entryway. Expert tip: When it will come to securing your basement, you want to install a movement sensor stability digicam that comes with night eyesight. Several house stability vendors provide motion-delicate cameras with infrared night time eyesight, but the Tenvis wireless surveillance camera balances price and best-notch performance. Do-it-yourself protection camera installation one zero one Putting in a stability camera by yourself can save you cash. It can also help you get better acquainted with your method and its functions. When setting up a digital camera yourself, it is essential to contemplate the subsequent: Map out the place you want to location cameras so you know how many to buy. Make sure you have the appropriate instruments to install the cameras. Take a look at your tools prior to setting up. When putting in a digicam outdoor, mount it at least 10 ft over the ground or greater. With a Do-it-yourself set up, it’ll be up to you to figure out how many cameras you need to have as properly as which attributes fulfill your property and family’s protection demands. How several safety cameras do you need to have? How many protection cameras you need to have to defend your property generally depends on your home’s dimensions and structure. You are going to need to think about factors like how numerous areas you want to keep an eye on, camera viewing angles and indoor vs. outside cameras to decide how many cameras you’ll want. You’ll also discover that surveillance techniques offer possibly solitary or numerous channels. Each and every channel signifies a solitary camera, so the number of channels you require in a program right corresponds with the number of cameras you plan on utilizing. If you only strategy on checking a single spot, one particular camera and a solitary channel should be enough. Even so, if you would like to monitor a number of locations at the identical time, you’ll need a multi-channel system. What’s the best viewing angle? Whether putting in indoor or outside protection cameras, you’ll require to know how vast or narrow of a check out you want prior to selecting your method. Broad angle lenses document broader viewing regions, but objects in that area will seem more compact. Slender lenses file narrower sights, but objects within that check out will appear larger. If you’re setting up a digicam on your personal and you’re not certain whether you want a smaller sized or a bigger discipline of view, you might want to choose a digicam with a varifocal lens that can be modified appropriately during installation.

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What is the Most Common Type of Safety Glasses?

At Safety Protection Glasses, we have a commitment to providing our customers with the perfect safety glasses for any environment or segment. Therefore, we have a large collection of safety glasses of all different shapes and sizes. With our mission to provide our customers with many different types of safety glasses to suit their needs, it is important that we have a good selection. This is why we carry plastic safety glasses, metal safety glasses, wraparound safety glasses, and rimless safety glasses. Also, we provide our customers with full descriptions and product specifications in order to help them select which of these styles is best for their needs.

With all of these options available, customers of Safety Protection glasses may wonder “What is the most common type of safety glasses?”. Or they may wonder “What is the best type of Safety Glasses?”. The truth is, there may not be the number one most common type of safety glasses in terms of style. The style of the frame you choose can vary based on your application. For example, you may choose wraparound glasses if you require extra coverage or streamlining against the wind. Also, you might choose plastic frames in a medical environment that requires you to sanitise your frames often.

However, although there may not be a specific frame shape that is the most popular or most common, there is one thing that everyone in the industry can agree on. This is the popularity and effectiveness of Polycarbonate lenses. In fact, Polycarbonate safety glasses are lightweight and provide exceptional impact resistance. Polycarbonate is the most popular lens material for safety glasses lenses. At Safety Protection Glasses, we are happy to offer a wide variety of prescription safety glasses made with polycarbonate lenses. We offer these in almost every different type of glasses shape you can think of. This means that our customers can buy polycarbonate safety glasses that are perfect for their needs.

Additionally, at Safety Protection Glasses, we are excited to carry our in-house line of prescription safety glasses. This is because our carefully curated line of safety glasses is made to assist our customers to see clearly, and therefore working more efficiently. If you work an industrial, hazardous job with the potential for flying debris, Safety Protection Glasses has you protected. Our glasses offer you the maximum amount of protection for your eyes. These glasses can be used as your primary prescription work glasses or goggles, to allow you to work safely and worry free. Men and women in all industries love their Safety Protection Glasses.

Additionally, our prescription safety glasses come in a range of lens forms.  These include single-vision reading or distance, digital single vision reading, or distance.  We also make Flat Top 28 Lined Bifocals or Varifocals for those that need them. You can assure yourself that if you add your prescription to our safety glasses, they will be perfect every time. Our collection of prescription safety glasses adheres to rigorous safety standards. We have an in-house lab that allows us to create the highest quality frames for our customers. While we pay close attention to all elements of the design process, we also take special care in ensuring that safety glasses offer the maximum amount of protection. Head to safetyprotectionglasses.com today to check out the full collection!

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Different Types of CCTV Cameras

Dome CCTV Cameras

The dome-shaped shell in which a dome CCTV camera is housed gives the camera its name. Despite the fact that these CCTV cameras are quite unobtrusive in appearance, they are effective in deterring crooks. This is due to the dome casing, which makes it impossible for others to discern which way the camera is pointed. For possible thieves or vandals approaching from all directions, this creates an air of uncertainty.

Bullet Type Cameras

These cameras are designed to capture the visuals of a specified region and are best used as home security cameras because they are fixed to a certain location. The design of these cameras is slender and cylindrical. They’re further divided into Ultra Bullets, which are characterised by their smaller size and lower price.

C-Mount Camera

C-Mount Detachable lenses can be used on CCTV cameras for a variety of applications. A CCTV camera can typically record up to 35 feet; however, if you require surveillance beyond this range, a C-Mount Camera with a specific lens can be used. To fine-tune focus distance and angle of view, a varifocal lens is frequently utilised. Without losing focus, they can be zoomed in and out.

PTZ Pan Tilt & Zoom Cameras

Your security team can have complete control over what is recorded using a PTZ (Pan, Tilt, and Zoom) camera. The camera lens can pan left and right, tilt up and down, and zoom in and out with the touch of a button. If you have a security person on site who is watching a live video stream, this is the best option.

Infrared/Night Vision CCTV Cameras

These cameras are meant to work best in complete darkness, as their name implies. Infrared technology is used to do this. Infrared cameras are more expensive than day/night cameras, however many that choose this option do so because night recording is critical to their business’s security.

Cyber Legend Technologies : The best CCTV supplier in Dubai that you trust. CCTV is a security surveillance mechanism that records what’s going in and around your company. The system comprises cameras, monitors and recorders. Cyber legend technologies supply the best quality CCTV security camera in UAE.