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

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  1. mr_birdman

    New Sigma 150/600

    Thanks. I find it plenty fast for aircraft at least with my camera bodies. I suspect it will be relatively fast still for birds. I would not even consider a TC for this particular lens. I, however, used an EF 1.4x II with the EF100-400mm f/4.5-5.6L IS II USM lens, but the Sigma 150-600mm...
  2. mr_birdman

    New Sigma 150/600

    How do you find this outfit? Have you taken it out? I have bought the 150-600 C for my fiancee and while I have not yet photographed birds (or other wildlife with it) yet, I have extensively tested at a couple of recent airshows and found the lens excellent!!! I have both 1DMkIV and 1DxMkII...
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