I've only had the 1 NIKKOR 18.5mm f/1.8 lens a couple days with just a little time to give it a detailed work out. First impressions are that this easily rivals my SLR 50mm AF-D prime. Bokeh is not quite as smooth, but focus (on my V1) is quick, no hunting, etc. This lens does not have an unlock button which also turns on the camera and has a shiny rather than flat or matte finish. This lens is incredibly light weight! The 1 NIKKOR 18.5mm lens is so good that I doubt my kit 10-30mm will be used much - if at all - in the future.
Focus on rain drops to test bokeh:
This lens focuses very close!
Stopping down slightly:
Final sample:
Focus on rain drops to test bokeh:
This lens focuses very close!
Stopping down slightly:
Final sample: