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 setup menu under the Buttons heading.
Autofocus A feature of the camera that allows it to focus on the subject automatically using electronics. Commonly referred to as AF.
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 opening of the lens similar to the iris of an eye. 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 ...
