benwjournal

[benwjournal]

[benwjournal]

PERFECT EXPOSURE PHOTO PRACTICE:

After learning about how to create perfect exposure we put it into practice by taking our cameras outside and taking pictures in the courtyard. I arrived at 12pm after break with my Kodak pixpro AZ421 camera ready to shoot outside and practice using perfect exposure and how to balance out iso, shutter speed and aperture. These are the results of that shoot.

[benwjournal]

A1: SKILL DEVELOPMENT

CAMERA EXPOSURE

Photography in Latin quite literally translates to "drawing with light" or "painting with light" which is very true in the context of learning about photography. Without light there is no photo, just like without paint there is no painting. A camera works with light going through the lense, aperture, shutter then the sensor which then detects the light and creates the photo. How much light hits the sensor is known as exposure. Exposure can be explained by something known as the exposure triangle.

Iso, aperture and shutter speed are the main factors in exposure and all in sync can create perfect exposure. Perfect exposure can help show more detail and lessen editing time after shoots. If you do want to break the rules a bit it is advised to start at perfect aperture then change settings to how you want them.

APERTURE

Aperture is the part of the camera which determine how sharp or soft parts of a photo is going to be (depth of field). This is done by tightening and loosening the aperture of a camera. How tight and how lose the aperture is, is determined by the F/ value (e.g: F/1, F/10 ect). The lower the F/ value the looser the aperture. This results in a smaller depth of field and only certain parts of the photo being sharp. This is the exact opposite when having a larger F/ value. The aperture will be tighter and result in the full photo being sharp and a larger depth of field. The looser the aperture also results in more light being brought through which is why all settings must be in sync to make perfect exposure.

ISO

Iso is the sensitivity of the camera sensor. This in turn means how much light that reaches the sensor is amplified by the Iso value (Iso is shown as iso 100, iso 200 ect). The lower the iso number the less the sensor reacts thus resulting in a darker photo and less noise. This is the complete opposite if you have a higher iso value. The result will be a brighter photo and more noise. Its is advised that during sunny weather where there is good natural lighting to use the lowest iso value like 80 or 100. While in cloudy weather you should use 800 iso and while inside use high iso’s like 2000.

SHUTTER SPEED

shutter speed determines for how long the shutter in the camera will be open and how much light will reach the sensor. The speed of the shutter also determines how blurry a picture may be. For example if you set your shutter speed (shown as fractions e.g 1/200, 1/300) to 1/1 the picture will be more blurry due to how long the shutter has been open and how much light it has allowed in. When using shutter speed it is always advised to use a tripod when using a shutter speed lower than 1/60. This is due to the fact it's almost impossible to hold the camera still for that amount of time.

PERFECT EXPOSURE

Perfect exposure is represented as the exposure metre (or E.V metre). To have perfect exposure the exposure metre must be ar 0.0. If the exposure metre reads -0.1 or below the photo will be darker and under exposed. If the exposure metre reads +0.1 then the photo will be brighter and over exposed. The exposure metre is also accompanied by histograms. If the histogram displays to the left then it will be under exposed. If to the right then over exposed. You can visually see if a photo has perfect exposure if the histogram is neutral or in the middle.