Future Firmware Plan for the Canon EOS 5D Mark IV

From Canon USA:  Future Firmware Plan for the Canon EOS 5D Mark IV

We would like to inform you that release of firmware to enhance functions of the EOS 5D Mark IV, which was originally scheduled for November 29 at the same timing as the firmware updates for six other models has been postponed until late February 2018 for reasons related to firmware preparation:

• Canon EOS-1D X Mark II Firmware Ver.1.1.4
• Canon EOS-1D X Firmware Ver.2.1.0
• Canon EOS 5D Mark III Firmware Ver.1.3.5
• Canon EOS 5DS Firmware Ver.1.1.2 
• Canon EOS 5DS R Firmware Ver.1.1.2
• Canon EOS 6D Firmware Ver. 1.1.8

We would like to offer our sincere apologies to users of this product who have been inconvenienced.

In the firmware to enhance functions of the EOS 5D Mark IV, we are planning to incorporate the following enhancements:

• Support will be added for chromatic aberration correction, peripheral illumination correction, distortion correction, and Digital Lens Optimizer when using Digital Photo Professional to process RAW images captured with the following TS-E lenses: TS-E 17mm f/4L, TS-E 24mm f/3.5L II, TS-E 50mm f/2.8L MACRO, TS-E 90mm f/2.8L MACRO, or TS-E 135mm f/4L MACRO.
• Support will be added to fix a phenomenon* in which standard exposure may not be obtained, or an irregular exposure may result, when Silent LV (Live View) shooting with the following TS-E lenses: TS-E 50mm f/2.8L MACRO, TS-E 90mm f/2.8L MACRO, or TS-E 135mm f/4L MACRO.
• Support for Exif 2.31 will be added.

*This phenomenon occurs when tilt or shift is applied on a TS-E lens (TS-E 50mm f/2.8L MACRO, TS-E 90mm f/2.8L MACRO, or TS-E 135mm f/4L MACRO) during LV shooting when Silent LV shooting is set (set to Mode 1 or Mode 2 on the menu). For this reason, until the firmware update, when performing viewfinder shooting or LV shooting, please shoot with the Silent LV shooting set to [Disable].

Canon Firmware Source: Canon USA

Latest / Current EOS Firmware Updates
Latest / Current EOS Firmware Updates