Computar - TG4Z2813AFCS-IR - 1/3-inch 2.8-12mm F1.3 Video Auto Iris, Day/Night IR

Product Overview

The Computar TG4Z2813AFCS-IR is a 1/3" CS-mount varifocal lens designed for true day/night cameras and IR illumination applications. With a 2.8-12mm focal length range, F1.3 aperture, and IR-compatible optical design, it provides flexible scene coverage for surveillance installations in changing lighting conditions.

Key Configuration

Lens format: 1/3"; focal length: 2.8-12mm; aperture: F1.3; max aperture ratio: 1:1.3; mount: CS-mount; max image format: 4.8mm x 3.6mm; application: day/night cameras with IR illumination.

Key Features

• 2.8-12mm varifocal range supports both wide-area coverage and tighter scene framing.
• F1.3 aperture helps maintain image brightness in low-light conditions.
• IR-compatible design supports day/night camera use with infrared illuminators.
• CS-mount construction allows integration with compatible security cameras.
• All-glass optics and durable construction support reliable surveillance use.

Technical Context

The lens provides a horizontal angle of view from 102.2° to 23.7°, a vertical angle of view from 74.2° to 17.8°, and a diagonal angle of view from 133.0° to 29.7°. This makes it suitable for installations that require adjustable coverage from wide monitoring to more focused viewing.

Installation Notes

Use with compatible 1/3" CS-mount cameras. Adjust the focal length and focus during installation to match the required field of view, then verify image sharpness under both visible and IR lighting conditions.