Computar - CMP-HG3Z4512FCS-IR - 1/2-inch 4.5-12.5mm F1.2 Auto Iris, Day/Night IR

Product Overview

The Computar HG3Z4512FCS-IR is a high-performance 1/2" CS-mount varifocal lens designed for CCTV and factory automation applications. With a 4.5-12.5mm focal length range, F1.2 aperture, and IR-corrected optics, it supports flexible scene framing, strong low-light performance, and consistent focus for day/night camera systems.

Key Configuration

Model: Computar HG3Z4512FCS-IR; lens format: 1/2"; focal length: 4.5-12.5mm; aperture: F1.2; max aperture ratio: 1:1.2; controls: manual iris and focus; mount: CS-mount; max image format: 6.4mm x 4.8mm.

Key Features

• 4.5-12.5mm varifocal range supports wide-area viewing and tighter scene framing.
• F1.2 aperture helps deliver clear images in low-light environments.
• IR-corrected optical design helps maintain focus consistency during day/night operation.
• Manual iris and focus controls allow precise optical adjustment during setup.
• CS-mount construction supports integration with compatible 1/2" and smaller-format cameras.

Technical Context

The lens provides a horizontal angle of view from 81.6° to 30.0°, a vertical angle of view from 60.4° to 22.6°, and a diagonal angle of view from 103.0° to 37.4°. Its IR correction makes it suitable for mechanical day/night cameras used in changing lighting conditions.

Installation Notes

Use with compatible 1/2" or smaller CS-mount cameras. During installation, adjust focal length, iris, and focus for the required field of view, then verify image sharpness under both visible light and IR-assisted night conditions.