I’m sorry if I didn’t explain it correctly in the video but it’s deeply explained in my threads in dpreview/fredmiranda.It is the same for me too. I am concerned that it might be the leading indicator (the "canary in the coal mine") of subtler problems, even with IS lenses, that might also be fixed once Canon knows the failure mechanism. When you are hand-holding at slow shutter speeds, it is easy to think the picture "fail" was in your holding of the camera being outside the range of what stabilization could correct. You can be sure that if it is easily visible at 1/10th, it is also doing something at faster and slower shutter speeds. Still, it is not a life or death issue, or else it would not have taken half a year to identify.
While juanmaasecas did a great job identifying the problem, he didn't explain it well enough so anyone could replicate it. It took some back and forth on DPreivew for me to replicate it. I found I could set my R5 with back button focus to focus in the corner with the starting magnification being 100% on the focus spot (MENU->Playback (Blue) -> Tab4 -> Magnification ->Actual Size from selected point) and the shutter in electronic. I could fire off shots and then in playback compare them with the thumbwheel. I didn't even have to download them to the computer.
My fear was that it would just be seen at Canon as "User Error" when it can be replicated if you know what to do. I suspect those that say their camera does not have it, didn't replicate the conditions correctly. It now sounds like Canon has been able to verify the problem which is a big step to getting it fixed.
maybe it’s an issue of me not being a native English speaker and most of you guys not being used to having a camera with ibis. I’ve been shooting Sony for years and it’s my regular technique for slow shutter shots (mine and most Sony users). - keep half pressed the shutter button for a couple of seconds keeping your breath
- Very Smoothly fully press the button
-go back to half pressed position
- shoot again smoothly and back again to half press, etc.
I have never experienced consistent issues with Sony. Sometimes ibis works better, sometimes worse, that’s why you take a few and choose the best, but with Canon there is this shake after the first picture that makes it blurrier than with ibis set to off, and it’s quite visible when the liveview feedback is back. It’s so evident to me that it’s not even funny. But yes I’m used to take night cityscapes at 1/2s with non-IS primes.