As we have seen from the many tests so far the best lens you can use on your A7-A7r camera is the Zeiss Otus 55mm f/1.4 (with E-mount adapter). Well if you like to get the best possible lens you will be happy to learn that Zeiss quietly admitted on their Zeiss page that their next “next Otus lens will be available in 2014: Otus 1.4/85.” Save the money guys! Found via MirrorlessRumors.
One more thing: They have no plan to make an A or E-mount version of the lens. It’s manual focusing lens so it doesn’t really matter anyway. Just use an adapter :)
A new Sony A7r with Zeiss Otus test can be seen at The.me:
The Zeiss Otus is a magnificent piece of optical engineering, as I could confirm having borrowed one from the Zeiss people here. It is F1.4, has no noticeable flaws and is very sharp if you focus correctly.