Aperture and ‘Aperture Priority’
The bish, bash, bosh guide to aperture
The aperture is a hole in your lens that you can make smaller or larger to control how much light enters your camera. Aperture works in exactly the same way as the pupil in your eye, which dilates in darker conditions and contracts in brighter conditions.
As well as controlling the amount of light entering your camera, aperture creates a very distinctive visual effect, which we’ll come to in a second. So just like shutter speed, which has a ‘Shutter Priority’ mode, aperture has its very own ‘Aperture Priority’ mode, which is A or Av.
The great thing about ‘Aperture Priority’ ...
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