• Use for many versatile applications due to enormous focal length adjustment range
• Wide 5mm view to ultra telephoto 50mm
• Built-in DC auto iris provides automatic adjustments when lighting conditions change
• Compatible with ALL CS-mount 1/3" CCD video cameras

The CSL-550A can be used to provide a dynamic field of view control between 5.3mm and 46.9mm focal lengths. And because its focal length is always higher than 5.0mm, there is no curvature distortion in the video image as seen with very wide angle lenses.

This is a varifocal zoom lens, and all lens adjustments must be made manually by hand. Once the desired focal length is acheived, the lens has thumb screws which tighten to maintain that specific focal length. We also carry fixed focus C-mount lenses for those applications where desired.

The CSL-550A employs voltage from the camera's auto-iris port to automatically adjust the amount of light which passes through the lens optical glass and reaches the imager. This feature allows for brilliant lighting in many diverse and changing lighting conditions. However, its extra light gain sensitivity can make the video image too bright under certain direct forward lighting circumstances. When room illumination is likely to remain constant, a manual iris lens in fact offers better overall image quality in many situations. For these types of camera installations, we also carry the CSL-550M.

This lens has a security-industry standard CS-mount lens thread, making it compatible with the following Eyespyvideo.com models: TV-CSHRL, TV-CSHR, TV-CSHDN, and T V-BCSHR. The auto-iris port on these cameras provides seamlessly compatibilty with the CSL-312A. However, this lens is NOT compatible with the special auto-iris port built into the TV-HDCS model camera. We offer a variation of the CSL-312A for this camera, our CSL-550X.

• Please click here for more information regarding lens optics and choosing the right lens.