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

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  1. tenex

    Optical comparison of Habicht 10x40 and HT (or FL) 10x42

    Can't be sure, but suspect he's talking about hydrophobic coatings on the outer lenses which cause water to bead off and are easy to clean. EL would have this ("Swaroclean"); FL might or not ("Lotutec") depending on age, indicated by a small arc added over the "10x42" label on the underside...