In terms of adapted lenses these get very rarely mentioned. M-mount Voigtlanders are very popular and people write a lot about Zeiss lenses. However these Voigtlander SLR lenses get very little attention. I think this is a shame since the two I have - the 20mm and now the 90mm are very good indeed.
I like these lenses very much, and they fit in with my wish to rationalise my lenses to one system. Manual focusing, as I've written countless times, is a breeze on the NEX-7. What is also pleasing is that the manual focusing confirmation on the Nikons is also excellent. There are arrows left and right in the bottom of the viewfinder which produce a white dot when the centre spot is correctly focused. Unlike some Nikons I've used in the past this is very accurate and works well.
So, something else to consider if you are thinking about some manual lenses for your CSC. Also something to consider if you are looking for top quality primes for a Nikon or Canon DSLR and some of the prices of the native Nikon lenses and Zeiss alternatives seem a bit steep.
Now if they come up with an alternative to the Zeiss Distagon 15mm F/2.8 ZF at 1/4 of the weight and 1/4 of the price then that would be a bonus!!