New Canon 5D Mark III Firmware For Uncompressed HDMI & F/8 Autofocus

May 1, 2013

By Josh Root

Canon has released version 1.2.1 of the firmware for its 5D Mark III DSLR. This update brings two useful features to the popular camera, one benefiting still photographers and the other those who shoot video with the 5D.

Firmware 1.2.1 gives filmmakers the ability to capture uncompressed 8-bit 4:2:2 video. This uncompressed footage will be output through the camera’s HDMI connection at the same time it is recorded to the memory cards and displayed on the 5D’s LCD. Also new is a “mirror” feature that allows the 5D to display camera and shooting information overlaid on the video displayed via the LCD, while maintaining video-only output over HDMI.

The new firmware also allows the center cross-type AF point to work with lenses that have a maximum aperture of f/8, bringing to the 5D Mark III the same functionality that was given to the 1D-X last fall. This will be of great use to wildlife and nature photographers using long telephoto lenses with extenders. You can find a list of the newly supported lens/telephoto combos on the Canon firmware download page.

Download the free Canon 5D Mark III firmware 1.2.1 update from Canon’s website.