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

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  1. J

    Kowa TSN-99a vs. Leica APO 82 Televid

    Hi Jay, I would love to believe that (as then my so far slightly undercorrected - that's what clear rings before and mushy later means) TSN-3 might be actually better than it looks in star test - and yes, the daytime view is very sharp even at high magnification. Although regarding that link I...
  2. J

    Kowa TSN-99a vs. Leica APO 82 Televid

    Hi, put some aluminum foil on a smooth and hard surface like glass and a very tiny hole with the tip of a needle or pin. Fasten the foil with the hole in front of a led flashlight and check if there is a tine round speck of light visible. Put artificial star at a distance of 20 or 30m and...
  3. J

    Kowa TSN-99a vs. Leica APO 82 Televid

    Hi mistermuel, first of all, welcome to birdforum! One of the worst scopes that I have looked through was a Leica 82mm on display in some optics store. The owner said that it's a lemon that should never have left the factory and he's arguing with Leica to get it replaced. That does not mean...
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