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

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  1. mr_birdman

    Night vision binoculars

    Hi guys I hope someone can kindly enlighten me. When I check night binoculars I often see them as 3.5 x 42 or 4 x 50 etc. Is the magnification indicated by the 3.5 or 4 and the diameter of the front lens by the 42 or 50? I just find them a little difficult to decipher. My current day time...
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