"The last time I saw an M lens this wide it cost $15,000used, thanks to collectors, so try to consider this abargain This lens on a M8 has put my Canon IDs with 24tilt-shift and the 16-35 on the shelf"
"In my opinion, the "new" version of the 50 1:1.4 Summilux-M ASPH lens is one of the two best lenses for all-around general photography, including street photos, low light photos, and selective focus photos."