Adobe A software company whose products include Photoshop and Lightroom.
aspect ratio The ratio between the width and height of an image. Traditional television has an aspect ratio of 4:3, 35mm film is 3:2, and wide-screen television is 16:9.
auto exposure Letting the light meter in the camera determine which shutter time and aperture should be used for a given scene.
auto focus When using automatic focus, the subject in front of the camera lens is brought into focus by letting the camera determine when the subject is sharpest.
back lighting Lighting a subject by placing it between the camera lens and the light source. ...