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.               Contact SALES Comments to WEBMASTER www.cctvhardware.com is TM & copyright 1999 - 2010 Security Design Services Corp. Security Design Services Corp. is an independent PelcoŽ dealer and is not affiliated with Pelco Corporation. All promotional art, characters, logos and other depictions are TM & copyright their respective owners. Pelco is a trademark of Pelco - Clovis, CA, and may be registered in certain jurisdictions. All Rights Reserved. Cameras | Video transmission | Lenses | Monitors | Time lapse recorders | Switchers | Quads | Multiplexers | Housings | Cabinets & Racks | Keyboards and Controls | Mounts | Scanners and Pan/Tilts | Camclosure | Spectra | Power Distribution | ImagePak | Domepak | Esprit | Receivers | Digital Recorders | Video over Network Security Design Services family of companies cctvhardware.com | allkindscable.com | securityideas.com Site design by Superior Media