[thxbb12]

36mp is not that high at all, a 16mp MFT like the EM-1 has a higher pixel pitch so would be equally affected (more so actually, as the pixels get more magnified at equal image size). That the current 36mp cameras appear to have some issues is not related to 36mp (D800 some AF issues and left AF point issues, A7r shutter shake issues). But some Olympus MFT models have shutter/IBIS issues too.

 

Agree, FF would require ~64mp to have a similar pixel density to 16mp in MFT land. However, the big issue with PDAF is that it requires a perfect alignment between the AF sensor and the imaging sensor.  Plus, body and lenses need to be calibrated in order to have accurate AF. It's very possible a lens would require different adjustments at different focal length. On my D800, my 70-200 required different micro adjustments whether at 70mm, 135 or 200mm. What a pain in the butt!

I used the D800 as an example, because a relatively small AF inaccuracy would show up while it wouldn't be the case with a D700 for instance. Because the density is less, the AF inaccuracy is masked by the larger pixel pitch.

Shutter shock is a different matter entirely and a rare occurrence with the E-M1. The A7R seems to have a major issue as far as shutter shock is concerned though.

All these issues will be gone with the advent of electronic shutters. We are not there yet, but it's just a matter of time until we do.

 

I don't seem to have such AF issues as your past DLSRs seem to have been plagued with... My Canon EOS 350D had some AF inconsistencies, but I can't say the same of my 6D.

 

I've never used Canon equipment. However, Pentax was pretty bad, especially the K5. The D800 had issue too, but it was never really acknowledged nor addressed by Nikon (how surprising). The fact remains that the technology is flawed. CDAF + on sensor PDAF is the way to go. Again, it's just a matter of time until mirrorless tracking catches up with the current state of the art in the DSLR world. Nikon CX seems to be already fairly close...