Lens calculator

Use the lens calculator to calculate the required focal length of the lens, based on your working distance and field of view.

Lens calculator for standard lenses

 





 

Lens calculator for telecentric and microscope lenses

You can use this telecentric and microscope lens calculator in 2 ways:

  • Calculate Field of view. You fill in the lens magnification, the horizontal and vertical resolution
    and the pixelsize of the camera. The result is the field of view
  • Calculate Lens magnification. You fill in the the horizontal and vertical resolution and the pixelsize
    of the camera. Now you will increase / decrease the value of the lens magnification till the desired field of
    view is calculated





 

Lens opening angles

The following table can be used as an indication for the opening angle at specific focal lengths and sensor size. Please note that these are just an indication and not exact values. The values for the horizontal and vertical openings angle are provided. The opening angle of the wide-angle lenses (less than 4mm) are based on the specific lens, because for wide angle lenses the correlation between focal length and opening angle can be huge.

Focal Length 1.1" 1" 2/3" 1/1.7" 1/1.8" 1/2" 1/2.3" 1/2.5" 1/2.9" 1/3"
VA-LM12-12MP-1.85MM-F2.0-018-FISH


hor.= 200°
ver.= 200°
hor.= 185°
ver.= 185°
hor.= 184°
ver.= 185°
hor.= 170°
ver.= 185°
hor.= 160°
ver.= 185°
hor.= 138°
ver.= 185°
hor.= 134°
ver.= 180°
VA-LM12-16MP-03MM-F2.5-023





hor.= 123°
ver.= 93°
hor.= 115°
ver.= 88°
hor.= 100°
ver.= 75°
hor.= 96°
ver.= 73°
VA-LM12-12MP-03MM-F2.0-017


hor.= 131°
ver.= 99°
hor.= 125°
ver.= 96°
hor.= 120°
ver.= 92°
hor.= 115°
ver.= 88°
hor.= 110°
ver.= 85°
hor.= 94°
ver.= 71°
hor.= 90°
ver.= 69°
3.3mm
VA-LM12-5MP-03MM-F2.8-020





hor.= 86°
ver.= 70°
hor.= 84°
ver.= 68°
hor.= 81°
ver.= 65°
hor.= 73°
ver.= 55°
hor.= 70°
ver.= 50°
4mm



hor.= 82°
ver.= 66°
hor.= 77°
ver.= 51°
hor.= 75°
ver.= 54°
hor.= 70°
ver.= 56°
hor.= 64°
ver.= 48°
hor.= 61°
ver.= 47°
5mm

hor.= 84°
ver.= 68°
hor.= 74°
ver.= 59°
hor.= 71°
ver.= 56°
hor.= 65°
ver.= 51°
hor.= 63°
ver.= 50°
hor.= 59°
ver.= 47°
hor.= 53°
ver.= 40°
hor.= 51°
ver.= 40°
6mm hor.= 105°
ver.= 86°
hor.= 95°
ver.= 78°
hor.= 74°
ver.= 57°
hor.= 65°
ver.= 51°
hor.= 59°
ver.= 46°
hor.= 55°
ver.= 41°
hor.= 53°
ver.= 39°
hor.= 48°
ver.= 36°
hor.= 45°
ver.= 34°
hor.= 41°
ver.= 31°
8mm hor.= 85°
ver.= 68°
hor.= 77°
ver.= 62°
hor.= 57°
ver.= 44°
hor.= 51°
ver.= 40°
hor.= 46°
ver.= 36°
hor.= 42°
ver.= 32°
hor.= 41°
ver.= 31°
hor.= 38°
ver.= 29°
hor.= 35°
ver.= 26°
hor.= 32°
ver.= 24°
12mm hor.= 59°
ver.= 46°
hor.= 53°
ver.= 42°
hor.= 39°
ver.= 30°
hor.= 35°
ver.= 26°
hor.= 33°
ver.= 24°
hor.= 29°
ver.= 22°
hor.= 28°
ver.= 21°
hor.= 27°
ver.= 20°
hor.= 23°
ver.= 17°
hor.= 22°
ver.= 17°
16mm hor.= 46°
ver.= 37°
hor.= 41°
ver.= 33°
hor.= 31°
ver.= 24°
hor.= 27°
ver.= 21°
hor.= 24°
ver.= 18°
hor.= 22°
ver.= 16°
hor.= 21°
ver.= 16°
hor.= 20°
ver.= 15°
hor.= 18°
ver.= 14°
hor.= 16°
ver.= 12°
25mm hor.= 31°
ver.= 25°
hor.= 28°
ver.= 22°
hor.= 20°
ver.= 15°
hor.= 17°
ver.= 13°
hor.= 15°
ver.= 12°
hor.= 14°
ver.= 11°
hor.= 14°
ver.= 11°
hor.= 13°
ver.= 10°
hor.= 11°
ver.= 8°
hor.= 11°
ver.= 8°
35mm hor.= 21°
ver.= 15°
hor.= 19°
ver.= 14°
hor.= 13°
ver.= 10°
hor.= 12°
ver.= 9°
hor.= 11°
ver.= 8°
hor.= 10°
ver.= 7°
hor.= 10°
ver.= 7°
hor.= 8°
ver.= 6°
hor.= 8°
ver.= 6°
hor.= 7°
ver.= 5°
50mm hor.= 16°
ver.= 13°
hor.= 14°
ver.= 12°
hor.= 11°
ver.= 8°
hor.= 9°
ver.= 7°
hor.= 8°
ver.= 6°
hor.= 7°
ver.= 6°
hor.= 7°
ver.= 6°
hor.= 6°
ver.= 5°
hor.= 5°
ver.= 4°
hor.= 5°
ver.= 4°
75mm hor.= 11°
ver.= 8°
hor.= 10°
ver.= 7°
hor.= 6°
ver.= 5°
hor.= 6°
ver.= 5°
hor.= 5°
ver.= 3°
hor.= 5°
ver.= 3°
hor.= 5°
ver.= 3°
hor.= 4°
ver.= 3°
hor.= 4°
ver.= 3°
hor.= 3°
ver.= 2°

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