Do you know the lingo?

Resolution

The display resolution is the number of pixels that can be displayed on the screen. It is often quoted in pixels or as an abbreviation of a standard e.g 640 x 480 pixels or VGA.

The most common resolutions are VGA - 640 x 480, SVGA - 800 x 600, XGA - 1024 x 768, SXGA - 1280 X 1024.

Optical zoom

Optical zoom magnifies the size of an image by adjusting the lens. Unlike digital zoom, optical zoom enlarges the subject without sacrificing resolution.

Digital zoom

Uses digital technology to enlarge an image. Digital zoom does not have moving parts. It is the electronic enlarging of an image. The pixels at the center portion of the image are digitally doubled to make the image appear larger on the display.

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Glossary of Audio Visual Terms »