Unique-Bargains 4mm F1.4 CCTV Lens M12 x 0.5 1/3

4 mm F1.4 CCTV lens for 1/3" cameras

This 4 mm lens with an F1.4 aperture is built for 1/3" format security cameras using an M12 x 0.5 mount. It suits installers who need a wide-angle view for indoor or outdoor surveillance in shops, bars, parking lots or warehouses. The compact black barrel measures 16 x 14 mm and weighs only 5 g.

M12 x 0.5 mount fits standard CS-mount bodies

The lens threads directly into any camera body that accepts an M12 x 0.5 CS mount, requiring no adapter rings or spacers. Its small 16 x 14 mm footprint leaves clearance inside tight camera housings or dome enclosures. The fast F1.4 aperture gathers more light, reducing the need for supplementary illumination at night.

Replaces narrower or slower original lenses

Swapping a stock lens for this 4 mm F1.4 unit widens the horizontal field of view and improves low-light performance in a single step. The upgrade is worthwhile when the existing lens cannot cover the desired scene width or struggles with dim conditions. It does not serve applications that require telephoto reach, varifocal adjustment or larger sensor formats.