Canon today launched a new firmware update (version 1.2.1) for the 5D Mark III that provides two notable improvements to the camera: uncompressed HDMI output and the ability to use cross-type autofocus at f/8.
The 5D Mark III can now be upgraded to capture clean, uncompressed YCbCr 4:2:2 8-bit digital video. Uncompressed footage will be sent with embedded time code over the camera’s HDMI output while it simultaneously displays the video on the rear LCD and records it to its memory cards.
A new “mirroring” feature via the HDMI output allows video to be displayed on the rear LCD screen with or without scene and camera information while also outputting a clean video signal to a monitor or external recorder.
The new firmware allows cross-type autofocusing with the center AF point when the maximum aperture becomes as small as f/8, in the same way that the EOS-1D X does.
More info on Canon’s website.