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SXGA — Super Extended Graphics Array, — 1280 x 1024 pixels count.
UXGA — Ultra Extended Graphics Array — 1600 x 1200 pixels count.
VGA — Video Graphics Array — 640 x 480 pixels count.
XGA — Extended Video Graphics Array — 1024 x 768 pixels count.
WXGA — Wide Extended Graphics Array — 1280 x 800 pixels count.
Zoom Lens — Lens with a variable focal length that allows the operator to
move the view in or out making the image smaller or larger.
Zoom Lens Ratio — Is the ratio between the smallest and largest image a
lens can project from a fixed distance. For example, a 1.4:1 zoom lens ratio
means that a 10 foot image without zoom would be a 14 foot image with
full zoom.