I have had my Sony a7r for a while now and am getting used to the manual focus. I had to because I still do not have an e-mount AF lens. I use my Canon lenses with an adapter and one lens that has really impressed with sharpness is my 100-400mm L lens which I have been using to get shots of birds in Paschber.
Kohlmeise (Parus major)
Kohlmeise (Parus major)
I spend a few hours set-up near feeding areas and wait till the birds get used to my presence, now in winter the results are pretty good and I have been lucky to get some goods shots of my favourite bird the European Robin.
European Robin (Erithacus rubecula)
European Robin (Erithacus rubecula)