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

Dave Williams's latest activity

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    Dave Williams replied to the thread Canon RF 200-800mm IS USM.
    I use the R7 in preference to a 1.4tc on the 100-500 Colin. I’m impressed with the IQ on the R7 but ISO much better on the R5 but having...
  • D
    Dave Williams replied to the thread Canon RF 200-800mm IS USM.
    If I were to buy the 200-800 it would be to replace the 1.4TC on the 100-500 which would not only give me more light but no loss of...
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