Summary: I got this lense to use with the LAEA-4 adapter on the a7ii. I'm not a pro so only have my personal experience but once I calibrated the focus it was simply amazing. I have read people rave about this lens and in my mind it is truly "legendary".
Summary: I have been using this lens for a couple of months. It is the best lens that I have owned. I use it with my Sony a65. As an amateur I have been learning my craft and this lens has made a huge difference.
Summary: This lens is the pinnacle of technology and optical quality for portrait artists. Though a bit on the heavy side for use on mirrorless A7R but I have not taken this lens off my camera ever since i received it. Images are rendered beautifully and the bokeh at f/1.8 is amazing.
Excerpt: I have a couple of Sony / Zeiss lenses, so I'm familiar with quality, etc of this line. I have the Zeiss 24-70 and the 85 1.4, in addition to the original Sony 70-200 2.8 G. This lens however blew me away. I had heard great things and always wanted to try.
Summary: I bought this lens in mid December, 2013, and I have been stunned by the quality of the photos I have taken with it. It took some getting used to. It is big and heavy, but I love that about it.