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

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    Prisms! S-P, Uppendahl, Abbe-Koenig..

    Indeed. Is the difference in micro-contrast between a well-executed Schmidt-Pechan design and an Uppendahl likely to be discernible only by nitnoids/BB-stackers like our friend denco, or is it likely to be apparent to the average binocular user? If Leica could make available a Retrovid with...
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