ABC
Accessory Shoe
Aberration.
Advanced Photo System (APS)
AE (Automatic Exposure)
AE-L (Automatic Exposure Lock)
Agitation
Ambient Light
APO Lens
Aperture
Aperture Priority
Aperture ring
Artificial light
Aspherical lens
ASA
Aspect Ratio
Auto Exposure Bracketing
Autofocus (AF)
Automatic Camera
Automatic iris
AV