M50 Mark II First Impressions

RLight wrote:

Heads up, I'm seeing a relatively high rate of shutter shock / AF miss / IS gyro shift on my continuous bursts... I also saw this on the M6 Mark II, but, at 14FPS, picking the sharpest wasn't a big deal other than processing power / time needed to do so.

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I've ratcheted back up to high speed FPS and C-RAW to help mitigate and will re-attempt. This is with continuous AF off.

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Thoughts on culprit? Folks around here assumed it was shutter shock / M6 Mark II. I'm seeing it on the M50 Mark II.

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I didn't see it on my time with the M50 Mark I, but, then again, I wasn't using continuous drive / AI-servo so heavily. Well I was, but maybe I've gotten more picky? Might have to go back to the archives but the problem wasn't this, problematic. I also wasn't using the 15-45 though heavily back then either. Could be a 15-45 idiosyncrasy where the STM motor is catching up?

Thanks for sharing your experiences and observations. They are interesting and are helpful in trying to understand how the M models may differ in performance in real-world situations. This kind of info is hard to get from camera reviews and only comes with using the camera over time.

The one above looks like slight 'diagonal' camera motion

After

IS-motor sync?

After

What I too am finding with my 'new M50ii' second body is that it is a bit slower than the M6ii in keeping up with moving subjects and AFing to shoot rapidly. I am finding it takes a little longer to 'lock focus' on things like a moving train. The M6ii can lock and shoot quicker than the m50ii and for sure keeps up with locking AF on higher fps bursts.

In some cases the M50ii doesn't lock on a moving train at all (Amtrak trains flying by at >60 mpg) and I get no shots even pushing the shutter button a number of times --- this is using the smallest spot focus which typically is the quickest AF method that locks! With the M6ii as R2 has suggested, the spot focus is incredibly reliable --- this may not be the case with the M50ii --- I will try with other focus methods to see if I get better results.

I don't really see clear shutter shock per se in the above photos, nor in mine --- and we shouldn't if the M50ii truly has EFCS -- but I do see a lack of sharpness perhaps due to not getting a quick enough AF lock --- or perhaps slight blurring due to the lens IS doing something a little funky during exposures at these shutter speeds.

This seems to be confirmed by my previous observation that with the EF-M 15-45, EF-M 18-150, and even EF-S 55-250: in the viewfinder I see the image 'jump' slightly when using the mechanical shutter. When using silent mode with electronic shutter this 'jump' seems to go away almost completely, so to me it seems related to the mechanical shutter.

The resulting images even when I see this 'jump' in the EVF on single shots are sharp and don't show the characteristic 'jittering' unsharpness from shutter shock. My guess is that the shock of the mechanical shutter closing after the exposure causes slight movement which may cause the IS system to react and jump the image a little. It would not be a stretch to imagine this showing up in the images as weird effects or even possibly real 'shutter shock' in a 7-10 fps higher speed burst on the M50ii.

Correct focus, after

Whatever the case may be, I'll say the M6 Mark II with it's larger buffer, higher FPS capability, was easier to mitigate IS-motor syncs, AF shifts and critical focus / subject movement issues. I just prefer it was the M50-DSLR body type...

BTW, my EOS R doesn't share these hiccups. Yes, the lowly, original R.

Perhaps because the effect is enhanced by the 'feather-light' weight and small size of the smaller m50ii. Perhaps the R is bigger enough, and heavier enough to give it enough stability so it doesn't show up.