![](http://store4.yimg.com/I/securitycam_1686_3812651) ![pad](http://us.st1.yimg.com/store1.yimg.com/Img/trans_1x1.gif) ![C or CS Mount](http://store4.yimg.com/I/securitycam_1686_3824703)
Modern cameras and lenses are generally CS mount rather than C mount. With CS mount cameras both types of lenses can be used but the C mount lens requires a 5mm ring (VM400) to be fitted between the camera and lens to achieve a focused image. With C mount cameras it is not possible to use CS mount lenses as it is not physically possible to mount the lens close enough to the CCD to achieve a focused image.
![](/lib/securitycam/CCScomparsion.GIF)
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