The last Firmware version 1.02, which Canon released for 5D Mark IV was to improve communication reliability when using EOS Utility to register/update new Digital Lens Optimizer. Once again, just after two months Canon released another Firmware Version 1.0.3 “Improves the reliability of communication when using the EF1.4X III or EF2X III extender”, plus also corrects the other bugs in the remarkable Canon 5D Mark IV camera.
The new firmware update version 1.0.3 will fix the following:
- Corrects a phenomenon in which the color of images varies depending on the metering mode selected during flash shooting.
- Improves the reliability of communication when using the EF1.4X III or EF2X III extender.
- Corrects the level display when the camera is held in the vertical orientation with the hand grip pointing downward.
- Improves the reliability of communication via USB cable when using the Lens Data Registration function with EOS Utility 3.