The 1/3 20-100 mm F/1.6 aspherical varifocal lens from Tamron USA Inc. covers the telephoto range normally achieved only by zoom lenses. This lens is a cost-efficient alternative to a zoom lens and is ideal for applications such as traffic surveillance. An F/1.6 aperture ensures bright imaging in dimly lit areas. The lens covers an angle of 13.6-deg. by 10.2-deg. at the 20mm setting and 2.8-deg. by 2.1-deg. at the 100mm setting. Tamron USA Inc.
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