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

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  1. rrdjserv

    2 unknows

    Taken in Richmond, VA, USA. Any help on these would be appreciated. --Rick
  2. rrdjserv

    Sigma 500mm f/4.5 filters

    Jan. 16, 2009 I just received my lens today and have a question. The instructions say to keep a filter in. I really don't want to use the polariser for birds because of possible light loss, so I have the clear filter in. But I am concerned that sooner or later, dust or moisture will get into...
  3. rrdjserv

    Hello from Bumpass, VA.

    I have been birding seriously for 3 years and love it. My equipment incldes: Canon 300mm L IS f/4 Sigma 150mm f/2.8 macro Sigma 24-135mm Canon 1.4x and 2x TC's Kenko extension tubes B&W 77 circular POL Canon TC-80N3 shutter release Canon 580EX Speedlite Manfrotto 055MF4 tripod and Manfrotto 486...
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