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eos 5d iv

  1. justaCanonuser

    EF 600mm L IS USM III: firmware update problem with EOS 5D IV, better use an R system camera

    Just a short info for users of EF version of the current 600mm f/4 (Mk III in EF mount): if you want to update the firmware of that lens (currently 1.1.3), better use a current R system camera + adapter. Updating worked flawlessly with my R7. Problem with a 5D4, and this may happen with other...
    • justaCanonuser
    • Thread
    • ef 600mm f/4.0 l is usm mark iii eos 5d iv firmware update
    • Replies: 0
    • Forum: Lenses
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