Firmware Version 1.1.3 for the EOS 5D Mark III incorporates the following improvements
and fixes.
1. Supports the single focal length EF 40mm f2.8 STM lens that is to be released at the end of June 2012.
2. Fixes a phenomenon in which an image may become underexposed when using the Auto Lighting Optimizer for continuous Auto Exposure Bracketing (AEB) shooting.
3. Fixes a phenomenon in which the backlight of the LCD monitor may not turn off depending on the camera settings and timing.
4. Fixes a phenomenon in which the camera's power may not turn on when a super-telephoto lens is mounted to the camera with an extender (EF 300mm F2.8L IS II USM / EF 400mm F2.8L IS II USM; Extender EF 1.4X III / Extender EF 2X III)
5. Corrects mistakes in the Dutch, Italian, Korean, Norwegian, Polish, and Swedish menu screens.
The firmware upgrade can be installed by the user. Full instructions and downloads are available at the
>>Canon Download Centre
1. Supports the single focal length EF 40mm f2.8 STM lens that is to be released at the end of June 2012.
2. Fixes a phenomenon in which an image may become underexposed when using the Auto Lighting Optimizer for continuous Auto Exposure Bracketing (AEB) shooting.
3. Fixes a phenomenon in which the backlight of the LCD monitor may not turn off depending on the camera settings and timing.
4. Fixes a phenomenon in which the camera's power may not turn on when a super-telephoto lens is mounted to the camera with an extender (EF 300mm F2.8L IS II USM / EF 400mm F2.8L IS II USM; Extender EF 1.4X III / Extender EF 2X III)
5. Corrects mistakes in the Dutch, Italian, Korean, Norwegian, Polish, and Swedish menu screens.
The firmware upgrade can be installed by the user. Full instructions and downloads are available at the
>>Canon Download Centre