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

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  1. WHIMBREL

    Sigma 1.4 DG Tele-converter on Sigma 150-500 OS Lens.

    Has anyone used the Sigma 1.4 DG Tele-converter on the Sigma 150-500 OS Lens (preferably with the Nikon D300) and if so could they let me/us have their findings.
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