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

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  1. IanF

    Canon 400 f5.6 or 100-400 zoom with 7D

    I have the 7D and both these lenses. They both have their strengths. For general bird photos, both static and in flight, I prefer the 400mm f5,6 as apart from being slightly lighter than the 100-400mm the body is noticeably narrower and fits nicely in the hand. Plus I think the autofocus is...
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