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 | | | | - Choosing the right Camera Lens
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I need help choosing a lens size for my camera.
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If your video observation camera uses interchangeable lenses, you have a great deal of flexibility in what your camera can see from wide-angle to close-up, but you may need some help selecting the proper lens for your application. For help selecting the right lens to best suit your needs view the following charts:
| Example |
| Say a convenience store is trying to read a license plate at a fuel pump 100 ft away. You'd need a 75mm lens to make the license plate readable. |
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Lens Size |
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| Distance |
2.8mm |
4mm |
6mm |
8mm |
| 5ft |
8.5' W x 6.5' H |
6' W x 4.5' H |
4' W x 3' H |
3' W x 2.25' H |
| 10ft |
17' W x 12.75' H |
12' W x 9' H |
8' W x 6' H |
6' W x 4.5 H |
| 25ft |
43' W x 32' H |
30' W x 22.5' H |
20' W x 15' H |
15' W x 11.25' H |
| 50ft |
86' W x 64.25' H |
60' W x 45' H |
40' W x 30' H |
30' W x 22.5' H |
| 100ft |
171.5' W x 128.5' H |
120' W x 90' H |
80' W x 60' H |
60' W x 45' H |
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Lens Size |
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| Distance |
12mm |
16mm |
25mm |
50mm |
75mm |
| 5ft |
2' W x 1.5 H |
1.5' W x 1.25' H |
11" W x 9" H |
6" W x 4" H |
4" W x 3" H |
| 10ft |
4' W x 3' H |
3' W x 2.25' H |
1.75' W x 1.25' H |
11" W x 9" H |
8" W x 6" H |
| 25ft |
10' W x 7.5' |
7.5' W x 5.5' H |
4.75' W x 3.5' H |
2.25' W x 1.75' H |
1.5' W x 1.25' H |
| 50ft |
20' W x 15' H |
15' W x 11.25' H |
9.5' W x 7.25' H |
4.75' W x 3.5' H |
3.25' W x 2.5' H |
| 100ft |
40' W x 30' H |
30' W x 22.5' H |
19' W x 14.5' H |
9.5' W x 7' H |
6.5' W x 4.75' H | | |
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