Security Camera Lenses
Choosing the proper CCTV lens is vital to building a video surveillance system that records clean and crisp video of the desired area or location. Security camera lenses range from 1.4mm to 100mm+ and can be used to monitor anything from a small closet to oil rigs miles off the coast. Depending on your location, you may need to choose between fixed CCTV lenses or a varifocal security camera lens to guarantee that your video feeds aren't washed out by changes in ambient lighting.
Not sure what lens you need? Check out our Lens Comparison Tool or call us at 800-997-8460 and we'll be happy to assist you.
Starting at $47.95
Varifocal Auto Iris
Starting at $27.95
Varifocal Manual Iris
Starting at $16.95
Monofocal Manual Iris
Starting at $7.95
Detailed Lens Chart - The installer/designer can reference a detailed lens chart to determine the exact field of view based on lens focal length and distance to the target.
The chart below is for 1/3-inch format cameras.
For example, with a 1/3-inch format camera viewing a target area 10 feet away will provide the following target sizes:
2.8mm = 12.9 feet X 17.1 feet
4.0mm = 9.0 feet X 12.0 feet
6.0mm = 6.0 feet X 8.0 feet
8.0mm = 4.5 feet X 6.0 feet
12.0mm = 3.0 feet X 4.0 feet
The chart can also be used in reverse. By knowing the object distance and the required target area, you can determine what lens is required.
For example, using the chart for a 1/3-inch format camera viewing an object distance of 50 feet and a target area of 15 feet by 20 feet:
Scan down the "50 feet" column to the stated target size; scan left to see that a 12mm lens is required for that application.
|Detailed Lens Chart|
|5 feet||10 feet||25 feet||50 feet||75 feet||100 feet|
|2.8mm||6.4 X 8.6||12.9 X 17.1||32.1 X 42.9||64.3 X 85.7||96.4 X 128.6||128.6 X 171.4|
|4.0mm||4.5 X 6.0||9.0 X 12.0||22.5 X 30.0||45.0 X 60.0||67.5 X 90.0||90.0 X 120.0|
|6.0mm||3.0 X 4.0||6.0 X 8.0||15.0 X 20.0||30.0 X 40.0||45.0 X 60.0||60.0 X 80.0|
|8.0mm||2.3 X 3.0||4.5 X 6.0||11.3 X 15.0||22.5 X 30.0||33.8 X 45.0||45.0 X 60.0|
|12.0mm||1.5 X 2.0||3.0 X 4.0||7.5 X 10.0||15.0 X 20.0||22.5 X 30.0||30.0 X 40.0|
|16.0mm||1.1 X 1.5||2.3 X 3.0||5.6 X 7.5||11.3 X 15.0||16.9 X 22.5||22.5 X 30.0|
|25.0mm||0.7 X 1.0||1.4 X 1.9||3.6 X 4.8||7.2 X 9.6||10.8 X 14.4||14.4 X 19.2|
|50.0mm||0.4 X 0.5||0.7 X 1.0||1.8 X 2.4||3.6 X 4.8||5.4 X 7.2||7.2 X 9.6|
|75.0mm||0.2 X 0.3||0.5 X 0.6||1.2 X 1.6||2.4 X 3.2||3.6 X 4.8||4.8 X 6.4|