Computar Ganz HG3Z4512FCS-IR 4.5-12.5mm CCTV Camera Lens

CS-Mount IR Lens for 1/2" Sensors

The Computar Ganz HG3Z4512FCS-IR is a varifocal CCTV lens built for CS-mount cameras using 1/2" format sensors. It covers a 4.5-12.5mm focal range with 3x optical zoom and a bright f/1.2 maximum aperture. All-glass aspherical optics and IR correction eliminate focus shift when switching between day and night modes. Manual zoom and focus rings include locking set screws for a fixed setup.

Installers Needing Flexible Field of View

This lens suits installers who must adjust the viewing angle after the camera is mounted, avoiding a return trip to reposition the hardware. The DC auto iris automatically controls exposure across changing light conditions. Buyers using cameras with larger sensor formats or non-CS mounts should look elsewhere, as the optical circle and flange distance are matched specifically to 1/2" CS-mount devices.

Locking Screws Secure Critical Adjustments

The bundled locking set screws let technicians lock both zoom and focus positions once the scene is framed, preventing vibration or tampering from shifting the image. A durable metal barrel and mount resist wear during repeated adjustments. IR-corrected glass maintains sharp focus under infrared illumination without the focus drift common on standard lenses.