Hi coogee - have you tried zeissimages.com ? You can search by lens, which may help. This is a fantastic thread but a bit of a beast these days! I'm in a similar position looking for 2/50 and 2/35 ZM images...
The 85 has a bit of focus shift when you stop down. It has not bothered me in practical use, but I have a Nikon D700. Might be different with Canon.
The rendering is different from 100 and 50 MP, more like the Planar 50/1.4, maybe more subtle and not so much "in your face" as the others.
What else do you want to know?