It is essential to select the correct lens for each application. The wrong lens choice can compromise the entire system. To make the right decision you must consider several factors listed below. Focal Length Camera Format Depth of Field F - Stop Auto or Manual Iris Video Drive or Direct Drive C or CS Mount Angle of View Calculation 35mm to CCTV Conversion Chart Packaged security camera systems | Security Cameras | Unitized Security Cameras | Board & Mini Security Cameras | Covert security cameras | Video transmission | Security Camera Lenses | Monitors | Housings & mounts | Wireless video | Installation Necessities | Motion detectors | Power supplies | Power protection | Video Signal | Digital Video Recorders | Remote Video Systems | Video Over Network | Security Products Contact Our Sales Dept. Comments to: webmaster@securityideas.com Site design by Superior Media Security Design Services family of companies securityideasvar.com | cctvhardware.com | allkindscable.com | securityideas.com www.securityideas.com is TM & © 1999-2010 Security Design Services Corp. All promotional art, characters, logos and other depictions are TM & © their respective owners. All Rights Reserved.