GLOSSARY
- Active D-Lighting
A camera setting that preserves highlight and shadow details in a high-contrast scene with a wide dynamic range.
- AE (Autoexposure)
A function of a camera where the camera selects the aperture and/or shutter speed according to the camera's built-in light meter. See also Aperture Priority, Shutter Priority, and Programmed Auto.
- AE/AF (Autoexposure/Autofocus) Lock
A camera control that lets you lock the current metered exposure and/or autofocus setting prior to taking a photo. This allows you to meter an off-center subject and then recompose the shot while retaining the proper exposure for the subject. The function of this button can be altered in the Custom Setting menu (CSM f7).
- AF-assist illuminator
An LED light that's emitted in low-light or low-contrast situations. The AF-assist illuminator provides enough light for the camera's AF to work in low light.
- ambient lighting
Lighting that naturally exists in a scene.
- angle of view
The area of a scene that a lens can capture, which is determined by the focal length of the lens. Lenses with a shorter focal length have a wider angle of view than lenses with a longer focal length.
- aperture
The designation for each step in the aperture is called the f-stop. The smaller the f-stop (or f-number), the larger the actual opening of the aperture, and the higher-numbered f-stops designate smaller apertures, letting in less light. The f-number is the ratio of the focal length to the aperture diameter.
- Aperture Priority
A camera exposure ...
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