Ruth's sister M12 2.8-12mm varifocal lens F1.4 internal power cable

M12 2.8-12mm Varifocal Lens

This M12-mount varifocal lens offers a 2.8-12mm focal range with a fixed F1.4 aperture for HD CCTV cameras. It supports 3.0 megapixel resolution and covers a horizontal field from 108 degrees down to 31.2 degrees. Manual focus and zoom rings allow precise framing for each installation. The lens fits 1/2.5 inch and 1/3 inch sensor formats with a 6.39mm back focal length.

Installers Needing Adjustable Coverage

The variable focal length suits installers who must set the exact viewing angle on site without swapping fixed lenses. IR transmission extends usability into low-light scenes. Buyers requiring auto-iris control or motorised zoom should look at alternative lens types because this model uses a fixed iris and manual adjustment only. The 0.2m minimum object distance limits extreme close-up work.

3.0MP Resolution with Wide Angle Range

At the wide end the 108-degree field covers large rooms or yards comfortably, while the 12mm setting narrows to 31.2 degrees for distant detail. The F1.4 aperture gathers ample light for the rated 3.0MP sensors. Performance drops when used on sensors larger than 1/2.5 inch or in temperatures outside the -20 to +80 degree Celsius operating range.