EOS R6 - AF not on target on few pictures

Chris_From_Holland wrote:

I'm stunned.

I'll give a try with the trial version. It does bring a visible improvement.

Thanks!

DxO completely changed the way I shoot now and why I (and many others) highly recommend it. My default mode is Manual with Auto-ISO.  I know any ISO up through 12,800 will look very good on the R5. In a pinch, I wouldn't mind going to 25,600 or even 51,200, and it should be better for you with the R6.  In this way, I can control the depth of focus with aperture and the shutter speed based on subject motion and let the camera pick the ISO.  Previously, it was a bad compromise to shoot aperture with as much ISO as I could tolerate, and I hope there was not too much subject motion blur.

Also, I have tried playing with the knobs in Adobe RAW to reduce noise, and invariably you play a bad game of losing saturation and resolution to reduces noise. You can't get the detail back with sharpening.  With DxO, it is just a few button clicks, and it comes out with lower noise and much better detail than Adobe RAW.

A couple more suggestions to get a better focus in though lighting:

1. The AF system on the R5/R6 is tied to the exposure you see in the viewfinder. In the case of the photos you gave, the subject was a bit dark.  Your exposure setting, I think, was evaluative, and so whatever is bright in the scene is going to tend to drive the exposure. You might want to set the exposure to about +1 EV IF the subject is darker than other things in the scene. You have about 2 stops of headroom when you shoot raw, so this will give up one stop of headroom, but you can't recover bad focus (yes, there is software, but it is not a great option). 
2. Shoot a burst of photos (say 3 to 5) in a high-speed mode.  This will give the AF system more changes to lock on. You also give yourself a chance to get a better pose if the subject is working or a chance to make a montage of the sequence. I'm trying to train myself to shoot in bursts more, even with moderately still subjects.