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

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  1. GraemeS

    Tamron SP 150-600mm F5-6.3 DI IF VC USD

    Live view focussing means you'd be limited to tripod only (or at least I would). Personally that would be a stopper for me also, but that's my preference (ie why choose an option with such a severe limitation). The Tamron may also limit handholding, but not actually prevent it in good light...
  2. GraemeS

    Tamron SP 150-600mm F5-6.3 DI IF VC USD

    If you're using the 70D, would you be able to autofocus with tc on the 400? Personally, the only bird I've successfully manual focused for was an owl, losing snappy focus just takes all the joy out of bird photography for me.
  3. GraemeS

    Tamron SP 150-600mm F5-6.3 DI IF VC USD

    Many thanks Marc. I'm really tempted by this lens. Your comments seem to back up what Hor Kee said, and I too will be largely in rain forests often with low light. But I think the reach of this, the potential for great pics in good light, my willingness to use even ISO3200 on my 7D (I'm no pro)...
  4. GraemeS

    Tamron SP 150-600mm F5-6.3 DI IF VC USD

    Do you mean that if you took a photo with the Canon and one with the Tamron at 600mm, then cropped both to the same field of view that the Canon would be preferable? Or do you mean comparing both at 400mm? Cheers.
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