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

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  1. Ken Doy

    Sigma 500mm F4

    Have a good trip Akos . I turn 71 in a couple of months and am not a big person but have no problems hand holding my Nikon D500 with the Sigma 500mm F/4 prime with or without a T/C . Maybe all in technique . Ken
  2. Ken Doy

    Sigma 500mm F4

    A good alternative to the Sigma TS-81 foot and at about a third of the price is the Jobu Designs FF-S504 replacement foot . Buying direct from the manufacturer in Canada can save a lot of money especially for us here in Australia where the exchange rate is aprox one for one
  3. Ken Doy

    Sigma 500mm F4

    Enjoy Richard . Have been using mine with a Nikon D500 for about 6 months now and love it . Just suggest that you get a USB Dock to fine tune it especially focus speed and OS setting .Regards Ken Doy
  4. Ken Doy

    Sigma 500mm F4

    Have been using the Sigma 500 mm f/4 for a couple of months now along with the Nikon D500 and can't fault the lens in any situation , most of the time used handheld which even at 70 yrs of age is fine . Also occasionally used with the Sigma TC-1401 ( on tripod ) with excellent results and very...
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