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

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  1. W

    Nikon 8x30 E2 100th anniversary - improved coatings/mini review

    Only a visible issue if the dirt is at the focal plane.. a small blob has entered some cheap 5x25 and is bugging me as I can see it like a fixed floater! Small amounts of dust will be impossible to see effect from as they will be out of focus. I know people who have telescope mirrors that look...
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