Back in October 2012, Canon announced it would be providing a firmware update for the Canon 5DM3 to enable cross-type AF support at f/8 and uncompressed HDMI output.
On April 30th that firmware update arrived. I’ve installed it and tested it and it’s great to finally have these features. The cross-type AF support has been long overdue and I had practically stopped using my teleconverters because of this restriction. Also, editing video should be better too since this update provides more flexibiltiy.
For more information: Canon 5DM3 Firmware Update.
