That Pana 20mm is not bad...
After some inspection I must say I find the 20mm quite a sharp lens with plenty detials on my E-M5. AT first I did suspect that the "old" Simga 19mm held more details, but some more expereience with the 20 has changed my mind. Here a resent example I just shot.
|Rotting Gracefully by Mond|
from Natural Decay
|attic by wgjohnston|
from In the attic, or in the basement!
|Ox Bow Aspen by McFrost|
from cell phones - nature photographs