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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Bushnell Excursion 8x28 - first impressions (1 Viewer)

FOV 417 ft./1000 yds or 7.9 degrees

AFOV is roughly (actually less than) 63 degrees (i.e. FOV * magnification or 7.9 * 8)

or more accurately AFOV is 58.1 degrees

2 * arctan(8 * tan(7.9 * 0.0174532925 / 2)) in degrees
2 * arctan(8 * tan(417 / 52.5 * 0.0174532925 / 2)) in degrees

You can copy and paste that last bit of text into Google and Google calculator will do the calculation for you if you want to fiddle about with the FOV and the magnification.

The simple approximation is close enough to within 5 degrees ;)
 
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Im going to pick up a pair and check them out. They may replace my current small porro, the 8x25 Sportstar IV. I may pass them on to my sister for my nephews and neices to use....if they dont inspire.
 
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