Surveillance kit, outdoor security cameras, surveillance dvr, hidden spy cameras

This is a 4mm auto iris CS mount lens, made for cameras with CS mount capability, auto iris DC plug in, and designed for varying light conditions. All of Q5 CCTV lenses are manufactured with the highest quality of glass, precision lens polishing, and industry standard antireflection coatings.

Along with convex-concave lens design, unwanted effects such as color distortion and spherical abberations are kept to a bare minimum. Click on the picture for a viewing angle chart and more details. One year warranty included.

-Specifications-

4mm auto iris lens
CS mount
1/3" image format
DC plug in

This chart shows the angle of view, when viewed on a monitor, depending on the focal length of a lens and what size CCD sensor the lens is used with. Most of Q5USA's cameras use 1/3" CCD with some exceptions of 1/4" which are listed in the specifications of every camera.

As a general rule, the higher the focal length, the narrower the view and the closer the object appears. The lower the focal length, the wider the view is but objects are farther away. Such the terms "telescopic" and "wide angle" are used respectively for narrow and wide camera views.

This chart takes into consideration that 10% of what the camera sees is hidden when viewed on a monitor due to oversanning. Some professional monitors have an underscanning feature to alleviate this.