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

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  1. J

    Swarovski NL 8x32 vs Leica Duovid 8+12x42 Brightness Mystery

    I might have missed it, but nowhere in this thread did I see a statement that "all other things being equal (i.e., same magnification, same optical configuration), a 42 is NOT brighter than a 32; the 42 it will produce a larger-diameter exit pupil, but as long as the exit pupils of both units...