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Security Camera Lens Size Comparison

A security camera lens size determines the field of surveillance view and zoom level that the camera provides. Our fixed security camera lenses range from 2.8mm to 100mm. The larger the size of the lens, the more narrow and zoomed in the field of view is. Some of our fixed lens cameras come standard with a 3.6mm or 6mm lens. A 3.6mm lens is designed to provide an approximate 72 degree field of view. If you need precise adjustment to the angle and field of view for your application, a varifocal lens camera is recommended so that you can adjust the lens to the exact view that you need. CCTV Camera Pros offers vari-focal lenses such as 2.8-12mm, 6-60mm, and 5-100mm

CCTV Lens Comparison Video

CCTV Camera Lens Comparison

The above video provides a side-by-side CCTV lens comparison using a box security camera setup with the following lens settings: 2.8mm, 6mm, 12mm, 60mm, and 100mm.

Security Camera Lens Comparison Photos

CCTV Lens Comparison

Above is a side by side photo that compares the same lens settings from the video. Please click here or on the image to view larger format of this image. The above photos and video were captured using our PRO-680DN box style security camera.


Additional Lens Examples

Here are some sample still photos taken using different lens sizes in a room that is 20 x 20 feet.  These images were taken back in 2008, so the quality is not as good as the first examples on this page.

The security camera is mounted in the corner of the room from a 10 foot ceiling.  All of the images were taken using a IP-MJ380 IP security camera, except for the 3.6mm image, which used our BIPRO-9007 indoor/outdoor infrared CCTV camera and an internet video server which can turn any CCTV camera into an IP camera.


3.6mm CCTV Camera Lens     3.6mm Fixed Lens - 72 View

6mm CCTV Camera Lens     6mm Fixed Lens - 43 View

12mm CCTV Camera Lens     12mm Fixed Lens - 22 View

16mm CCTV Camera Lens   16mm Fixed Lens - 19 View


The below sample video was recorded using a professional box CCTV camera with a fixed 3.6mm lens. The camera is installed on the underside of roof soffit and fascia to monitor activities of a driveway in front of a house.

Sample 3.6mm lens CCTV video




This sample video was taken with the same professional box camera and installed in the exact same location, but uses an 8mm lens to demonstrate the difference in angle and view between the 3.6mm lens and the 8mm lens. Notice how the 8mm lens is zoomed in on the field of view more.

Sample 8mm lens CCTV video


More sample CCTV Videos will be added

If you need any help in deciding which camera and lens is best for your needs, please give us a call. We have professional CCTV engineers to help.

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