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

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  1. J

    New but probably wrong insight about lowlight

    You're quite right. The eyeball moves (so the pupil moves). Sorry for the confusion. I'm just Dutch. The main point is that the exitpupil from the binocular does not move. So when the pupil (while moving) has the space of, for example, 7mm from a 10x70 but is by itself just 4mm it collects more...
  2. J

    New but probably wrong insight about lowlight

    Regardless the size of the pupil, the pupil moves (the visible size of the pupil is decided by the Iris). Otherwise we should only see the object straight ahead of the view.
  3. J

    New but probably wrong insight about lowlight

    The range of movement is always the same. The pupil moves. It can be 3mm or 6mm in diameter. When it moves it moves regardless its diameter, something the Iris is responsible for.
  4. J

    New but probably wrong insight about lowlight

    Reinier, What you have to take in account is the fact that the humans pupil doesn't stand still but moves tens of times per second. In theory will a 8 and 10x42 be the same when the pupil is 4.2 at the max. Still the 8 times looks brighter because of the fact the 'moving' pupil catches the...
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