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 & © 2008 Security Design Services Corp. Security Design Services Corp. is an independent Pelco® dealer and is not affiliated with Pelco Corporation. All promotional art, characters, logos and other depictions are TM & © 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