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

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    Test: Big scopes vs big lens with the Kenko Lens2scope and Live View

    I finally got around to doing a test I have been meaning to do for quite a while. A few years ago I got interested in photography and purchased a Canon 400 mm f/4 DO lens. It's a great camera lens and because of the DO technology its quite light--about 2 kg. Because I often take walks to get to...
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    Canon 400mm f/4 DO vs 300mm f/2.8

    I am curious whether any one has compared the 300mm f/2.8 (IS or non-IS) with a 2x teleconverter to a 400mm f/4 DO lens with 1.4x teleconverter. As both lenses would approximately 600mm and f/5.6 I am wondering how they would compare in terms of optical quality and auto-focus speed. I know the...
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    New EDG zoom for Fieldscope 82

    As a long time user of a Nikon 82ED Fieldscope I have long wished for a wide angle zoom to rival the Zeiss, Swarovski, and Leica zooms. Am I right in saying, now that the EDG Fieldscopes are arriving it looks like the new zoom for that scope will not fit the old Fieldscopes? Has anybody...
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    review of gitzo 1298 tripod

    Recently I had been searching for a small travel tripod for use with a 82 mm angled Nikon Fieldscope. A year ago or so I started using a Berlebach 3022 tripod for general birding. This was much more stable than my Manfrotto 3022 (055) aluminum. However, it weighted about 4.5 kilograms with...
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    Best Travel Tripod

    I am looking to buy a tripod to complement my larger Berlebach Wood Tripod. There would be two uses: for travel and for birding when I would have to carry my scope long distances. So I am looking for something light and compact. I use an angled scope so height is not terribly important...
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    Big Scopes

    I have a Nikon Fieldscope 82 EDa which I think is really excellent in terms of optics and handling. However, there are many times when I feel scopes in the 77-85 mm range are at their limits. So I have four questions: 1) Steve Ingram has suggested in some situations (heat shimmer, fog) a...
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