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

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  1. P

    HDF 40831 vs 40810 question (and other specs)

    They are woeful when it comes to providing meaningful specifications. Zero information on their eyepiece pages about field of view.... one of the most important things anyone wants to know. .
  2. P

    HDF 40831 vs 40810 question (and other specs)

    I've used the 40831 with an MM4 60 along with the HDFT zoom, then sold both and bought the SDLv3. The 40831 is a very nice eyepiece, but if you're also considering the SDLv3 I don't think you'll need the 40831 - the SDLv3 is a spectacular eyepiece with a nice wide field of view and comfortable...
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