Varifocal Manual Iris Security Camera Lenses
Part #: AP-0358
Price: $16.95
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| Part #: AP-0615
Price: $24.95
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| Part #: AP-2812
Price: $32.95
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Part #: AP-1230
Price: $36.95
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Detail Lens Chart - The installer/designer can reference a detail 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 |
