Quote:Are you saying that if one uses AF, then the focus shift will not be a problem? i.e. that the camera will correct it in some way?
No, I said "at max. aperture". :-)
Theoretically it could apply a correction factor (Pentax does so I remember) but this does not seem to be the case with the test cameras. Possibly newer EOS cameras can do it.
And to be somewhat more precise - you will probably never experience the effect when shooting at f/11 because the DOF catches up with the RSAs.
The really critical setting is f/4 or f/5.6 at close focus distances.