Varifocal Surveillence Security Video Camera Systems

By | July 18, 2015

Varifocal: A camera with a varifocal lens allows the operator to zoom in or out while still maintaining focus on the image.

  1. A varifocal lens is a camera lens with variable focal length in which focus changes as focal length (and magnification) changes, as compared to parfocal (“true”) zoom lens, which remains in focus as the lens zooms (focal length and magnification change).

Our Recommendation:

GW Security IR Night Vision Waterproof Bullet Outdoor Security Camera – 1200TVL Sony CMOS 2.8~12mm Varifocal Zoom Lens
GW Security Inc

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