Variable focal length lens

Variable Focal Length Lens: A type of zoom lens that requires refocusing as it is zoomed.

A variable focal length lens. The most common zoom lens on digital cameras has a 3:1 ratio.
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Or Variable Focal Length Lens. A zoom lens. e.g., 28-100mm; meaning a lens with a focal length capable of varying from 28mm all the way to 100mm, from landscapes to portraits.
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Zoom Lens - A variable focal length lens. The most common on digicams has a 3:1 ratio (i.e. 35-105mm). See "3x" and "Focal Length"
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Zoom lens - a variable focal length lens that when adjusted makes the subject appear closer than it is. Read More...

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The total amount of light reaching the film plane (the "exposure") changes with the duration of exposure, aperture of the lens, and, the effective focal length of the lens (which in variable focal length lenses, can change as the lens is zoomed).

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Zoom Lens . A variable focal length lens. The most common on digicams has a 3:1 ratio (i.e.

See also: Focal, Zoom, Focus, Lens, Focal length