Just came back from San Francisco. I used the A7r with some Zeiss Hartblei and Canon TS lenses. I did not have to blend any image. The dynamic range is incredible. With the 5DIII, I always had to blend in PS. Focus Peaking works nice. However to nail focus the x14 Zoom is better. With the EVF this is easy. For tilt you focus for infinity and then just dial in a little tilt. Just like the theory says, but now it works. Focus peaking will show you exactly how your focus plane moves. Also what happens if you you open/ close aperture. Impossible with any other FF cam.
The cam handles nice, though I disabled all the functions of the dial wheel as they alway pop up somehow. The Sony wireless remote control was used for shutter release.
I used the Metabones adapter. I didn't have any issues with it.
The images are made with Zeiss Hartblei 40 and 80 mm and Canon 17mm. Vignetting was not an issue. The sunset with flowers had a some tilt added (Zeiss Hartblei 40mm).
Files where converted with Adobe DNG Converter 8.3 and then processed in Aperture. I guess Apple RAW will get even better results.
The dynamic range is amazing. You push a totally dark image all the way up, and there is no color bending. It stays absolutely clean. Impossible on the 5DIII which will then always give you color artifacts.