Firmware 1.2.1 was released on 30 April 2013 to allow the camera to output uncompressed video via HDMI and permit autofocus ability up to f/8.

[10] Firmware 1.3.3 was released on 29 January 2015, fixing minor menu issues and improved AF control-ability when shooting in Live View mode with a wide-angle lens.

[12] In July 2020 an attempt was made to launch a Cubesat named CE-SAT 1B equipped with a 5D Mark III sensor on an Electron rocket.

VIDEO: 720p | 1080p | Uncompressed 1080p | 4K | 5.5K | 8K ⋅ SCREEN: Flip (tilt) F , Articulating A , Touchscreen T ⋅ BODY FEATURE: Weather Sealed

SPECIALTY MODELS: Astrophotography a | Cinema EOS C | high resolution camera S | no AA filter effect R ⋅ FIRMWARE ADD-ON: x Magic Lantern Support