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

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  1. John A Roberts

    Leica UV 8x20 versus Zeiss Victory 8x25

    In terms of the optical differences between the x20 (and x25) Ultravids and Trinovids, see the screen grabs from a 2007 catalogue (it's from shortly after the small Ultravids were introduced): - both have the same general optical pattern of 6 lenses per side (and the same field of view) - the...
  2. John A Roberts

    Leica UV 8x20 versus Zeiss Victory 8x25

    I have an Ultravid 8x20, and the small size is both its strength and weakness In terms of usability, the 29 mm diameter eyecups allowed a lot of front lighting from around the eyecups to detract from the image However, the performance was transformed - though with a very slight loss of...
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