The image as seen in an OVF has less qualitative overlap with the final result compared an EVF and the final result is all that matters. Not a hole in a camera.
e.g
Over/Underexposure:
OVF - no feedback
EVF - full fullback (inc. histogram)
DOF-Preview:
OVF - poor feedback
ECF - acceptable feedback
White Balance:
EVF - no feedback
OVF - full feedback
Of course, some EVFs are better than others.
Other than that the mirror slap induces vibrations that are just not necessary.
As far as the A7r as a whole is concerned. No, it is not the last word in the game (of course).
It lacks PD-AF and an electronic shutter.
Whether you like the boxy layout - I can live with it but I would prefer something more elegant. But that's just a matter of taste and style.
So yes, the A7r will not replace your "average" EOS 5D III ... yet. The A7r II could.
That said I question the concept of a tiny full format mirrorless camera. Long tele lenses are just way too big in comparison to the camera.
e.g
Over/Underexposure:
OVF - no feedback
EVF - full fullback (inc. histogram)
DOF-Preview:
OVF - poor feedback
ECF - acceptable feedback
White Balance:
EVF - no feedback
OVF - full feedback
Of course, some EVFs are better than others.
Other than that the mirror slap induces vibrations that are just not necessary.
As far as the A7r as a whole is concerned. No, it is not the last word in the game (of course).
It lacks PD-AF and an electronic shutter.
Whether you like the boxy layout - I can live with it but I would prefer something more elegant. But that's just a matter of taste and style.
So yes, the A7r will not replace your "average" EOS 5D III ... yet. The A7r II could.
That said I question the concept of a tiny full format mirrorless camera. Long tele lenses are just way too big in comparison to the camera.