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14 Cards in this Set
- Front
- Back
Luminance Channel
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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.
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Chrominance Channel
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Contains the RGB video signals or some combination thereof. Also called color or C channel.
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Focal Length
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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.
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Viewfinder
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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.
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Aperture
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Iris opening of a lens; usually measured in f-stops
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Camcorder
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A portable camera with the video recorder built into it.
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ENG/EFP Camera
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Highly portable, high-end self-contained camera for electronic field production.
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Focal Length
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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.
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F-Stop
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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.
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Iris
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Adjustable lens-opening mechanism. Also called lens diaphragm.
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Fast Lens
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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.
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Slow Lens
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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.
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Zoom Lens
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Variable-focal-length lens.
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Zoom Range
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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.
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