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

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  1. M

    Photographing birds at a distance and what to expect?

    I agree with this post. IS/VR can nowadays be used with tripods, especially tripods that are not totally still with long lenses. I am usually shooting from monopod or travel tripod -- sometimes in the wind -- and the VR still helps. Even when I have my big gitzo out with mirror up and cable...
  2. M

    Photographing birds at a distance and what to expect?

    As in #9, I'd also look at the f-stop Look at a DoF calculator like http://www.dofmaster.com/dofjs.html. A 7d with 400mm at f/6.4 will have a DoF of 0.14m (+/- 0.07m) at 10m. So 7cm compared to a 30cm bird is not a lot if your focus point is a little off or not adjusted properly. f/8 would...
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