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

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  1. vd Berg

    Question: Spotting scope vs. super telephoto lens

    Hello, Not with standing a price-, weight- difference. I was wondering, what is the difference in sharpness, image quality between a digiscoping and super telephoto lens (from 500mm) setup, for birds (waders, birds of prey) at a long distance (from about 70m)? I mean waders and birds of prey at...
  2. vd Berg

    Question: Swarovski object module 85mm vs 95mm

    Hello, A Swarovski object module 85mm (25-60x) has a better min. ‘aperture’ than a 95mm (30-70x) for digiscoping purpose. Do you have two photos whereas the result shows, for the same object, distance and magnification, between a 85mm and 95mm? Regards, vd Berg
  3. vd Berg

    Question: about a digiscoping equipment comparison test?

    Hello, I have the impression that there isn’t/aren’t unfortunately (a) (recent) (sound) digiscoping equipment comparison test(s). Why there isn’t/aren’t? I dispute that (recent) done review(s), with all respect, are (a) sound (recent) quality difference test(s) between equipment. Off course...
  4. vd Berg

    Question about: digiscoping DLSR settings?

    Hello, Can you preset a fixed ‘effective’ aperture and focal length in your DSLR for your telescope/adapter lens? If yes, which preset fixed 'effective' aperture and focal length, exposure mode, shutter speed and ISO settings for your DSLR mostly gave the best photo results? Please also tell...
  5. vd Berg

    Question: similarities and differences between pancake/APO/prime lens?

    Hello, I digiscope for idenfication purpose. ‘tac sharp’ photos are not intended. For digiscoped identification purpose the performance of the telescope, camera, pancake/apochromat/prime lens and the achievable settings are relevant with regards to the birds size, contrast, weather conditions...
  6. vd Berg

    Question: experience with full frame digiscoping?

    Hello, What is your experience with full frame digiscoping (preferably in non-optimal light conditions) with a focal length from 1.000mm? The purpose is digiscoping for identification photos at long distance (preferably in dim light) of a) small birds in high trees b) far-a-way waders. So...
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