Thanks for reporting this firmware update. I was hoping the update would fix what, for my shooting, is a crippling bug which I reported to Canon UK 5 weeks ago. A very diligent engineer from Canon Customer Services worked through the problem with me and verified the fault. Although the firmware update appears to fix my problem it doesn’t fix it.
In all the tests described the lens has been the EF-M 32mm f1.4. The camera buttons are set so that autofocus activation is achieved via the button on the AF/MF control and not on the shutter release button.
Some of my shooting involves pre-focussing the lens on the subject with the camera worked by a remote release. For example, you’re photographing animals at a feeder. You pre-focus on the feeder and wait for an animal to get into the right position to press the release. The time delay could be a while and the camera powers off. The fault is that when the camera powers off and later powers up again the lens changes its focus. If an animal now arrives in the feeder and you trigger the camera via the remote release you have an out-of-focus picture. This happens even with the custom function “Retract lens on power off” set to Disable. Setting Manual focus makes no difference. I tried using the Interval Timer function mentioned in the firmware release notes but the lens still mis-focussed. None of the EOS EF mount models I’ve tried behave this way.
Playing with the camera with this new firmware V1.1.0 it seems that the lens moves during both power off and power on which seems odd. I will contact Canon UK to say the problem isn’t fixed and hope that they issue another firmware update.
