DeoTech is going to ship the new Contax G to NEX adapter from April 20th. Here are some links to videos showing some Contax lenses on the NEX:
28mm: http://www.youtube.com/watch?v=2ZCmjzwg6V0
35mm: http://www.youtube.com/watch?v=6Tz9Yx7ruKo
45mm: http://www.youtube.com/watch?v=_uGMyLDlp1s
90mm: http://www.youtube.com/watch?v=xC_fWkEj2Ls
Here is the list of great G lenses with links to eBay price:
Hologon 16mm; 1:8 on [shoplink 16235 ebay]eBay (Click here)[/shoplink] -> (will not work on the DEO TECHART adapter).
Biogon T* 21 mm; 1:2,8 on [shoplink 16236 ebay]eBay (Click here)[/shoplink] -> (will not work on the DEO TECHART adapter).
Biogon T* 28 mm; 1:2,8 on [shoplink 16237 ebay]eBay (Click here)[/shoplink].
Planar T* 35 mm; 1:2,0 on [shoplink 16238 ebay]eBay (Click here)[/shoplink].
Planar T* 45 mm; 1:2,0 on [shoplink 16239 ebay]eBay (Click here)[/shoplink].
Sonnar T* 90 mm; 1:2,8 on [shoplink 16240 ebay]eBay (Click here)[/shoplink].
Vario-Sonnar T* 35 – 70 mm; 1:3,5-5,6 on [shoplink 16241 ebay]eBay (Click here)[/shoplink].