The basic rules is:The smaller the focal length number (eg. 3.6mm, 4mm), the wider area you can see; the bigger the focal length (12mm, 16mm), the further you can see, but with narrower viewing angle. You...
Please remember to rate this guide. Thank you, Shaun1521. Now that Spring is upon us, we have been blessed with the annual return of Bill Oddie's Springwatch ! And alongwith his reappearance , the newly...
OZCCTV, YOURS SECURITY! --- click here to visit our ebay store The Minimum Illumination The minimum illumination means a figure that the object brightness is as low as the regulated degree of a camera...
OZCCTV, YOURS SECURITY! Camera Synchronization Modes: Vertical Synchronization, Color Video Compound Signal Synchronization, External Synchronization, Direct Currency Locked and Complete Synchronization...