For those that haven't used Sony style focus peaking/magnification, you won't understand how good it works until you try a camera with a good implementation. Personally, i don't think the Pentax implementation, judging from the K3 and K5, is as good as the way Sony does it. Don't know how Samsung's focus peaking compares but its supposed to have been improved in this area somehow.
But if i'm shooting theater rehearsal pictures, i need AF - no two ways about it. For my landscape pictures that i try to sell, MF is all i need.
But what stops me from buying an A7 or a D810 for that matter is the shutter noise. I can not, will not tolerate loud shutter noise like that. Why is it that FF cameras do that - does the larger sensor mean that the shutter has to be noiser? The A7s has an electronic shutter and is totally silent - i think i could get used to that
A friend has both the A7S and the A7R. Says the A7S is the only one he uses for still shooting.
Irritates the heck out of me that we can't get an official announcement from Pentax on what date they are working towards an FF, or if its still on the track. I don't think thats fair to their customer base.