12-30-2012 11:39 AM
12-30-2012 09:06 PM
see
http://forums.usa.canon.com/t5/Lenses/Lense-compatability/m-p/9011#U9011
03/26/2024: New firmware updates are available.
EOS 1DX Mark III - Version 1.9.0
12/05/2023: New firmware updates are available.
EOS R6 Mark II - Version 1.3.0
07/31/2023: New firmware updates are available.
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