Some lovely shots in this thread by many.
For a related thread, check out the "favourite 50mm" in the FSU sub-forum. That is where the real bargains are.
CR, lovely shot of the tree - what Fstop? Your processing has given a bitingly sharp and contrasty image that nicely conveys the cold crispness of the wood.
I have J3. I like the sonnar design for a 50mm. There is simply nothing this fast that is so small at 50mm. I take it everywhere. Regarding the discussion on similar lens signatures, I shoot the J3 1.5 sonnar alongside a CV 35/1.2 and often find it quite hard to work out which lens I used for a particular shot. I love both dearly, other than the weight of the 35 Nokton, which is why it gets left at home in preferance to the sonnar for a single lens option.