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The CS-Mount 4.5-12.5mm Varifocal Lens from computar is designed for day/night cameras with 1/2" format sensors. The lens facilitates focal length adjustments, enabling you to change focal length without having to move your camera from its installation point. With an aperture of f/1.2 to 360, the lens is suitable for surveillance in low light as well as brightly lit conditions. Furthermore, this IR-corrected lens captures clear images, eliminating focus shift and infrared bleed.
Designed for CS-mount day/night cameras with 1/2" sensors
4.5-12.5mm focal length to clearly capture scenes requiring different focal settings
Designed for easy focal length adjustments
Aperture of f/1.2 to 360 enables use in low-light as well as bright-light conditions
Auto Iris mechanism allows the camera to capture detailed images even in areas with varying light intensity
IR correction minimizes focus shift and IR bleed, making the lens suitable for 24-hour surveillance operations
Aspherical lens surface provides corner-to-corner sharpness for all aperture settings
Comes with locking set screws and a durable metal barrel and mount
In the Box
computar CS-Mount 4.5-12.5mm Varifocal Lens
Limited 3-Year Warranty
Table of Contents
6.4 x 4.8 mm (ø8 mm)
Iris: f/1.2 to f/360 Focus: 0.98' to infinity (0.3m to infinity) Zoom: 0.17 to 0.49" (4.5 to 12.5mm)
Iris: Auto Iris Focus / Zoom: Manual
Angle of View
1/2-type: 108° to 37.6° (D), 83.7° to 30.1° (H), 61.3° to 22.6° (V)
Drive: 190 Ohms Control: 850 Ohms
-4 to 122°F (-20 to 50°C)
Effective Lens Aperture
Front: ø19.9mm Rear: ø9.9mm
Back Focal Length
Tele: 0.64" (16.5mm) Wide: 0.33" (8.5mm)
Flange Back Length
0.49" (12.5 mm)
M35.5 P= 0.01" (0.5 mm)
Object Dimensions at M.O.D.
At 4.5 mm: 21.14 x 14.01" (537 x 356 mm) At 12.5 mm: 6.33 x .72" (161 x 120 mm)