Recent M6 Mark II shutter shock study / M50 upgrade path rant

MAC wrote:

R2D2 wrote:

R2D2 wrote:

ThrillaMozilla wrote:

Larry Rexley wrote:

I wonder if the difference is in the holding of the camera... 98% of my shots are with the EVF, camera firmly supported by left palm, right hand, against face (3 contact points). Sometimes electronic shutter where I know it wouldn't be an issue, but also sometimes mechanical at the speeds this is claimed to occur.

I don't think so. I made some systematic tests with camera held exactly as you describe, seated, with elbows firmly placed on wooden arm rests on the chair. I measured shutter shake, not hand shake. And with the EF-M 15-45 the e-shutter was consistently considerably better around 1/60 to 1/125s. I think I posted an image. I did not find the wide range of shutter speeds with substantial degradation that others did, but I didn't test with arms not braced. The EF-S 18-55 3.5-5.6 IS STM and EF-S 55-250 IS STM were better, losing only around 10% in resolution at one or maybe two exposure times.

The measurements I have seen were with vertical shots on a tripod.

Perhaps this is more of an issue if the rear screen is used and the camera held at arms length?

Pictures with rear screen are always going to be shaky with any camera, unless the camera can be well braced on something.

I wanted to add another Shutter Shock Test of mine to this thread. EF-M 15-45 @ 1/60 second...

https://www.dpreview.com/forums/post/65457190

R2

And still another Shutter Shock Test of mine (@45mm) here…

https://www.dpreview.com/forums/post/65459772

R2

looks good R2. Your units are good! Thanks for your work on this. I think it could be some defective cheap IS zooms are out there where the Image Stabilization in these light weight units goes haywire -- mechanically/electronically. They apparently have the complexity to turn themselves on and off when they sense a tripod is involved and maybe that is screwing up a small amount of them. Folks are blaming EFCS -- but until a root cause --I think the better evidence so far points more toward IS systems in a certain small population of these cheap zooms. Folks involved should study with controlled methods and report to Canon.

I went back through some old threads and saw Alastairs response to AdamT's claim that the issue is EFCS.

Alastair responded on the root cause being the interaction between the mechanical shutter and the image stabilization - I agree with  Alastair's assessment  -- the key point is that primes are not impacted  -see below

Re: M6 mark II shutter shock with EF-M 15-45mm: Canon EOS M Talk Forum: Digital Photography Review (dpreview.com)

AdamT wrote:

From what I've read, when there is shutter shock it is actually caused by the IS,

It`s not Caused by the IS, it`s caused by the M6-II`s first mechanical curtain , there are no such issues with IS lenses on any other M series body because all of them have eletrconic first curtain as does the DSLR version of the M6-II, the 90D ..

It's caused by interaction between the mechanical shutter and IS. Thus it is caused by the IS, in the sense that the IS is what determines, in the M6II, whether you'll see any (often very slight) shutter shock. My point, which shouldn't have been hard to understand, was that you don't get shutter shock with non-IS lenses. The meaning of what I wrote was obvious, and I'm surprised to see that you didn't understand it (or perhaps willfully misunderstood it).