Bernard, thanks what is eye AF... I'm just guessing:
What on the nuisances of Mark 2 is I shoot people.
If this help everyone. I don't shoot much wildlife, nature etc, people, environmental portraits, some fashion, fine art...
For people, vertical, I have to manually set that top AF that hits the eye, very cumbersome and is does not work as well as the middle focus point. I was assuming or hoping by mark 4, with what 60 points, on a vertical headshot it would nail the persons eyes in focus, yeah or nay on that? I don't know...(but how do most Canon/ Nikon shooter focus for eyes, like I do, manually changing each time to top point?)
That said, I can't imaging switching over to Sony, I just ordered a new Sigma 12-24, not arrived yet, and have 4 lenses and backup Rebel. switch and spend a new 6 k? And then Canon in a few years matches whatever....
What else is wrong with DSLR? Iv'e seen articles that say the trade off between the two balances out. The extra body size if negligible, meaningless.
I've never used EVF. Do some people not like it?
I can't imagine images on the Sony would look better on a 27" imac or even a well printing 30 x40 in print. You really think most people would see a big difference?