Regarding (1) Are you sure it is being changed accidentally? How do you think it is being accidentally changed and can you reproduce the problem? As you know, there are different ways of changing the ISO value on the M6. I've always had a problem with my M6 that the ISO changes on its own - yes, really. I love the camera, but this is by far the biggest problem. I've been using Canon cameras since 1981 - this is not a newbie user error.
Despite trying, I can't recreate the problem at will. At first I thought I was accidentally turning the ISO dial underneath the exposure compensation dial, but this dial is actually quite stiff and difficult to turn accidentally. On many occasions while walking around turning the camera on and off taking photos, I have suddenly realised that the ISO has changed from Auto to 25600. Sometimes it will change to another value, but it mainly changes to 25600.
If it changes to ISO 100 in daylight that isn't a problem. However, ISO 25600 makes all the images too grainy to use. This is very, very annoying especially if I am taking photos at a location where I can't return easily. While photographing the ruins at My Son in Vietnam a couple of years ago I was just about to leave when I realised the ISO was set at 25600. When I started shooting the value was Auto. The initial photos were fine, but suddenly everything went to a fixed ISO of 25600 without me changing anything.
At first I was convinced that it was me inadvertently changing it somehow, but it's not. I have considered all the possible ways that I could change the ISO accidentally and tried to recreate the problem, but without success. On a couple of occasions I have looked down at the screen and seen the ISO scale pop up on its own.
Since realising the camera has this issue I have to look at the display frequently to check that the ISO value I set (normally Auto) hasn't changed by itself.
On forums I have seen a couple of other people complaining about the same problem with the M6, but not many. I guess that most people think they are doing it themselves accidentally or that it only exists on some, not all, M6's. I used the original EOS M before the M6 and never had this problem.
Anyway, I am a big EOS M series fan and will buy an EOS M6 II. Hopefully, this annoying problem will not exist in the new model.
Also, focus bracketing was mentioned in a previous rumoured spec list, but not in this latest video. That was a feature I really liked the sound of for macro and focus stacking.
Tyroop: Canon camera user since 1981?! Outstanding...
I have had the 'ISO moved and I don't know how it happened' situation occur to me on at least three occasions that I remember.
One was at Epcot Center in Disney World...and what happened had to do with me not being careful with how I put the camera back in its case (I think).
As I've posted here over and over, the M-series fits my usage pattern because of its huge [sensor size/(volume + weight)] ratio (yeah, I know, the units for this 'constant' would not be pretty).
What happens when I'm with my wife and/or two daughters is...I get more-and-better pictures (while traveling)...if I'm not looking like the AV geek from high school.
There are three scenarios:
(1) So I have a couple of different smallish shoulder bags (one of which carries the M6 and M10, while both are connected to various M lenses). But the fit is tight. And I'm certain that, when going from a dark WDW attraction to Florida sunshine...while in a hurry to the next attraction , the M6 was turned on and the ISO was changed from AUTO to 25600 (ruining a half-dozen or so pics...until I noticed it).
The same thing has happened while hurrying to remove/replace the M6/22mm f2 combo into an extremely form-fitting belt-mounted case. I need to be careful extracting the device. But I love this set-up because I have a first-rate body/lens combo that enables 'look ma, no hands'. So in a sense I've reproduced this (user) error.
(2) I have to (slightly) disagree with you about the detents for changing ISO, at least on my M6. You're right...there are clicks when changing ISO...but in my view Canon designed the ISO knob on the M6 to be moved with ease by one's thumb. And it does work. But of course there's a smaller diameter knob on top of the ISO knob: the exposure compensation knob. My first times when I (accidentally and unknowingly) changed ISO was when I used my thumb alone to change exposure compensation. The detents for exposure compensation are somewhat stiffer and clickier (at least on my M6)...and what happens, when attempting to change exposure compensation by thumb alone, I often change the ISO. There are threads about this elsewhere. For me, this was a simple 'fix': when changing exposure compensation, I use both my thumb and my index finger...more from the top of the camera...thus avoiding even touching the lower ISO knob. I have certainly reproduced this user error.
(3) The last situation in which the camera seemed to 'turn itself on' and change ISO occurred about ten days ago...and it happened repeatedly...and I knew that I would end up describing what transpired. In order to get my M's into form-fitting cases, I do not use the Canon-supplied straps. I use straps that are quite similar to the straps Canon shipped with both the S90 and S95 cameras. All of the M's I've used...from M to M6...work very well with these straps...and when any of the M's are mated to the 22mm lens, the kit fits nicely in the palm of my hand...almost out of sight. My most oft-used M lens is the 11-22 (the format's killer app, in my view)...and this combination's ergonomics are fine with the small straps.
But last week I tried to change things up a bit...and used a longer version of the thin straps...one that can be hung around my neck...with the camera dangling...and, when walking on the beach...banging a bit back-and-forth. Here's the deal. When the M6 was connected to the 15-45 lens, no problem.
But when I tried the same set-up with the 18-150...the rocking back-and-forth...into my chest...was significant enough to turn on the camera...repeatedly. And twice the ISO changed!
So I'll need to use the proper Canon strap when traveling with the M6/18-150 combo...a strap that has two points of connection to the camera...and the back of the camera therefore sits gently where it is supposed to.
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Clearly, in the M6 II, the knob devoted solely to exposure compensation in the M6 I...is gone. I never liked that knob anyway...I much prefer the exposure compensation implementation on earlier Ms and even the S series of cameras. I suppose the knob on top makes sense if you use a viewfinder (I have one for the M6 and seldom use it...but that's another story for another post). It kind of looks like the power on-off mechanism is a bit different, too. We'll see.
I hope what I've written makes sense...and I'll keep shooting with the M6--a fabulous device in a tiny package.
Thanks for reading.
