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14 Cards in this Set

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Luminance Channel
Contains the black-and-white part of a video signal. It is mainly responsible for the sharpness of the picture. Also called luma, or Y channel.
Chrominance Channel
Contains the RGB video signals or some combination thereof. Also called color or C channel.
Focal Length
With the lens set at infinity, the distance from the iris to the plane where picture is in focus. Normally measured in millimeters or inches.
Viewfinder
A small video screen or flat-panel display on a camera that shows the black-and-white or color pictures the camera generates. The flat-panel displays are also called monitors.
Aperture
Iris opening of a lens; usually measured in f-stops
Camcorder
A portable camera with the video recorder built into it.
ENG/EFP Camera
Highly portable, high-end self-contained camera for electronic field production.
Focal Length
A lens that permits a relatively great amount of light to pass through at its largest aperture (lowest f-stop number). Can be used in low-light conditions.
F-Stop
The scale on the lens, indicating the aperture. The larger the f-stop number, the smaller the aperture. The smaller the f-stop number, the larger the aperture.
Iris
Adjustable lens-opening mechanism. Also called lens diaphragm.
Fast Lens
A lens that permits a relatively great amount of light to pass through at its largest aperture (lowest f-stop number). Can be used in low-light conditions.
Slow Lens
A lens that permits a relatively small amount of light to pass through (relatively high f-stop number at its largest aperture). Requires higher light levels for optimal pictures.
Zoom Lens
Variable-focal-length lens.
Zoom Range
How much the focal length can be changed from a wide shot to a close-up during a zoom. The zoom range is stated as a ratio, such as 20:1. Also called zoom ratio.