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

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  1. W

    A quick question about FOV and exit pupil size

    Thanks. Eeek, that does seem to be a high bar. That puts all 8x binoculars below 132M @ 1000M in the narrow category. That seems to be most of them.
  2. W

    A quick question about FOV and exit pupil size

    Thats very useful thank you. Its a shame apparent field of view can't be calculated reliably. Do you know of a simple formula to calculate the apparent field of view, just to use as a guide? I'm making a spreadsheet of specs will be handy to add that number to use as a guide choosing which...
  3. W

    A quick question about FOV and exit pupil size

    When looking through binoculars you only get a narrow circle surrounded by blackness to look through. What I want is for this circle to be as large as possible for a less claustrophobic viewing experience. Should I be looking at FOV (i.e Meters at 1000M) for this or the exit pupil size (in...
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