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

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  1. J

    Review by 'jfmgb777' on item '300mm f4 APO Macro HSM'

    I managed to get hold of the older non-HSM version on eBay. It would seem to have been re-chipped to work with Canon digital SLRs (mine is a 350D). [Canon users please note: many older copies of the Sigma 300 mm f/4 and 400 mm f/5.6 only work at full aperture (fully open) with modern Canon...
  2. J

    Review by 'jfmgb777' on item 'SP AF 200-500MM F/5-6.3 Di LD'

    I have this lens mated with a Canon 350D. From my experience don't buy this lens if you want to get shots of birds in flight - against clear sky the autofocus hunts from infinity to minimum and back again, by which time the bird has flown out of view, even with panning. (From what I have read...
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