Zeiss 50 1.4 ZF
I accidentally posted this in the wrong forum the other day, so apologies in advance if you already saw this in the Nikon forum...
People are very quick to criticize this lens, partially because of some reviews that were less than favourable when it was originally released. If you pick one up and use it for a short period of time, you'll be hard pressed to find something more rewarding to use. The resulting images are not that bad either.
Here's an example from yesterday...