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

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  1. S

    Fujinon FMTR SX(2)

    I based my number of what has been told at Cloudy nights. I think it was Ed Zarenski who measured the useful ER to 13mm. And according to my experience 15-16mm is the shortest useful ER required for me with eyeglasses to get that open evenly illuminated view. It,s also noticeable at pictures...
  2. S

    Fujinon FMTR SX(2)

    A FMTR 10x50 had been in my collection since many years if it was not for the eyepiece design. The eye lenses are huge and eye relief is 20mm but unfortunately the lenses are so much recessed from the eyecup edge that useful ER is only 13mm. At least 5mm ER is wasted(taking in consider that a...
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