TY shawdow fox
M_M I think it's because people are indoors more and not so fired up to get out and shoot. I saw this same lens go for nearly 400 in the summer, and all spring noticed prices rising on all sorts of lenses. Someone made the comment "prices always rise in the spring" I thought about it and now I really see it--i think. Of course there are always ups and downs between auctions, so I might be crazy (as well as defensive, hehe)
Anyway the marvelous little 20 came today, and i took both the 20 and the 25/2.8 out for some shots on the nex (original 5, not new much better 5n) These are croped with true edges (or close) on right and left, where SA can be seen on full size examples. They look pretty good at this size

20/3.5

25/2.8

20/3.5 to see SA I'll link to full size--check edges
http://www.flickr.com/photos/5529947...n/photostream/

25/2.8 similar SA as the 20, yet sharper center--in fact, the centers on the 28 are incredible really
http://farm7.static.flickr.com/6035/...6a32bcab_o.jpg
at first I thought this was simply soft corners as can often be seen with retro wides and even the sony 16--sensor issues now far improved with the 5n. But then I started catching edges in perfect focus, below is not a terrible example

note chrome rail on red truck. This is wide open at 3.5 with the 20. It is sharp (nearly) to the edge. Full size:
http://www.flickr.com/photos/5529947...n/photostream/
I would love to see good scans of these same lenses on film to see if the SA is exagerated on digital: full infintiy landscape I think is the best test.
At any rate they are so impressive in the center of the frame

Wonderful builds too. Interestingly the 42/1.2 shoots just as sharp at f/8 with no apparent SA.