FLASH SALE! 10% Off Everything plus Free Shipping
Use Coupon Code SCKFLASH
Hurry! Sale Ends 6pm Friday
April 15, 2010

How to Calculate Lens Requirements

Security cameras utilize two basic lens types based on focusing parameters. These are called fixed lenses and varifocal lenses. Fixed lenses have a “fixed” focal length while varifocal lenses have a focal length that can vary. A more familiar term used for electric powered varifocal lenses is a “Zoom” lens; we will “focus” (pun intended) […]