This varifocal lens features a long focal length to magnify objects from far away for unobtrusive security. The SL940M is a high-quality lens designed to allow the installer to take full advantage of the high resolution of HD and multi-megapixel cameras. The lens incorporates patented Linear Optical Technology® and can be used on cameras up to five megapixel resolution for a crisp image from edge to edge.
The lens is IR corrected for use with true day/night cameras. This IR correction focuses IR light from artificial illumination at the same plane as the visible light allowing the image to remain in focus when the day/night camera switches to night mode. Unlike lenses without IR correction, the night image will not be out of focus when using IR illumination.
Megapixel | 5.0 |
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Relative Aperture (F-stop) | F1.5 |
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Focus | Manual |
IR Corrective | Yes |
Lens Iris | Manual |
Lens Mount | CS Mount |
Lens Type | Varifocal |
Max FOV (degrees) | 36 |
Focal Length (mm) | 9 - 40 |
Depth (in) | 1.97 |
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Diameter (in) | 1.54 |
Weight (lb) | 0.2 |
Warranty | 90-Day |
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File Name | File Size | File Type |
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Data Sheet | 179 KB | |
Manual | 270 KB |
Lens FOV Calculator | Choose from multiple scenarios and focal lengths to find the lens will work for your application. |
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Compare Lens FOVs | This handy FOV calculator will help you in determining which lens is right for your application. |
Compare IR & Low Light Tech. | See the difference between standard, super low lux, and IR CCTV security cameras. |
Compare Covert Cameras | Watch our sample videos to see which hidden covert cameras work best for your covert application. |