New 5D MKIII Firmware 1.2.1

Started Apr 19, 2013 | Discussions thread
MikeFromMesa Senior Member • Posts: 2,849
Re: New 5D MKIII Firmware 1.2.1

glaci wrote:

Sorry to tell you, but there is no AF with Sigma 300-800 f/5.6 DG + Canon 1.4x III Tc.

I wonder why... It should work.

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