The Contax 645 to Sony E-mount autofocus adapter is in Stock for the first time at Amazon US. It’s expensive but on the other hand if you do own a set of those super Contax lenses it might be worth for you to buy it.
Those are all 645 medium format lenses you can use with autofocus support:
[shoplink 39632 ebay]Distagon T* 35/3.5 (ebay search link here)[/shoplink].
[shoplink 39633 ebay]Distagon T* 45/2.8 (ebay search link here)[/shoplink].
[shoplink 39634 ebay]Distagon T* 55/3.5 (ebay search link here)[/shoplink].
[shoplink 39635 ebay]Vario-Sonnar T* 45–90/4.5 (ebay search link here)[/shoplink].
[shoplink 39636 ebay]Planar T* 80/2 (ebay search link here)[/shoplink].
[shoplink 39637 ebay]Sonnar T* 140/2.8 (ebay search link here)[/shoplink].
[shoplink 39638 ebay]Sonnar T* 210/4 (ebay search link here)[/shoplink].
[shoplink 39639 ebay]Tele-Apotessar T* 350/4 (ebay search link here)[/shoplink].
