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

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    What's wrong with the Zeiss Harpia??

    So I bought a Harpia 85mm the day before yesterday. Thanks you all for your support. Was thinking back and forth, hope I did not make a mistake... Tried it yesterday for the first time bird watching at a lake at dawn... could see a lot of things I couldn't with my SF 8x42. Still have problems...
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    What's wrong with the Zeiss Harpia??

    Hi everybody, so the day before yesterday I had the chance to try both Harpia (85&95) and compare it to a Kowa 99. The first thing which is quite apparent is the FOV of the Zeiss at wide settings - this is really awesome. The Kowa gets comparable to the Zeisses at max magnification however...
  3. L

    What's wrong with the Zeiss Harpia??

    Well, I guess there are two different "optical systems" we have to look at: one is the scope with its own physics - and the other is the human eye. If we just look at the scope, the optical parameters are fixed: (amongst others) magnification and exit pupil. These two factors determine...
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    What's wrong with the Zeiss Harpia??

    One thing which comes to my mind right now and which is not really being discussed is the advantage of having a smaller / stepped down aperture at wide settings: improved depth of field! It is a lot easier to bring / keep things in focus! So it comes down to actually when to when does one...
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    What's wrong with the Zeiss Harpia??

    Thank you all for your answers!! Really appreciate your inputs!! The ergonomic point makes me really think right now. As in Binos - you can't go wrong with one of the Alphas in terms of optics. But in terms of usage, there might be tangible differences. I guess before spending I need to find a...
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    What's wrong with the Zeiss Harpia??

    Hello Forum, I am a happy user of a Zeiss Victory SF 8x42 bino since not very long - but enjoy the views I can get from it. I am really getting a lot of fun viewing nature and wildlife in general, I got the feeling that my personal view of my surroundings are tremendously enlarged with that...
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