Specifications:

• 4-9mm standard board security camera lens
• The 4-9mm board lens provides a standard field of view which is ideally suited for most installations
• A 4-9mm lens will bring you closer to the action than a wide angle lens, and when used with an IR camera, it will not cause glare from the IR light
• All IR camera manufacturers recommend using a 4-9mm standard board lens or higher for use with their IR cameras
• Easy to Install, replacement lens easily threads in after removal of the previous lens is removed
• Focal Length: 4-9mm / 0.157-0.354in
• Aperture: 1.6
• Matching: 1/3"
• Angle of View: 70.6--33°
• Feild: Security monitor
• Color: Black
• Size: 26.5 x 40.6mm / 1.04 x 1.60in (Dia. x H)

Details:

• The lens is easy to install in place of the original board camera lens of most dome cameras

How to Compare Camera Lenses:

• Make certain the compared camera lenses actually fit the type and model camera. Many cameras have screw mounts where others offer a bayonet type mount. Many cameras don't have removable lenses at all
• Consider the type of photography when comparing camera lenses. The lens is responsible for the effect on an image so pair the lens with the scene. Landscape shooting requires a wide-angle lens, whereas a portrait lens uses a shorter focal length
• Try out each lens on the camera body and take a few test photos. Reputable retailers allow photographers to bring in their cameras and mount the lens before buying
• Compare apples to apples when buying camera lenses. Higher quality lenses are more expensive and typically yield brighter, crisper images due to better construction and higher quality materials. If the deal looks too good to be true, it probably is
• Understand that many camera lenses that work with 35mm cameras will not work with newer DSLR cameras. The 35mm lens systems use a different focal length for the full frame of film. Most DSLRs utilize a smaller image frame than 35mm cameras so the image recorded is adversely affected

Package Included:

• 1 x 4-9mm Vari-Focal Board Lens