The 1/2 4-12mm F/1.2 IR aspherical varifocal lens from Tamron USA Inc. is ideal for high-resolution 1/2-in. CCD cameras. The IR-corrected lens covers the standard angle of view in sites where IR light is present. The 3X range of the 4-12mm lens covers wide angles needed for indoor surveillance and the moderate telephoto used in parking lots and other perimeter observation. When positioned in the corner of a room, the 93-deg. viewing angle can provide wall-to-wall imaging. Tamron USA Inc.
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