Agree Oz, it does look fugly.
Chris, if you compare the penta-prism height of the new Sony relative to the diameter of the Zeiss Planar 85/1.4 ZA in this photo
http://i117.photobucket.com/albums/o65/ ... 855a_o.jpg
and then compare it to the penta-prism height of the F6 relative to the diameter of the Zeiss Planr 85/1.4 ZF
http://www.zeiss.com/C12567A8003B8B6F/G ... ile/09.jpg
Going by those pictures, it seems the prism of the Sony is not big enough for full-frame - but I suppose we'll find out later.