Below is the 200% centre crops without PSR and with. In-camera JPEG pics with firmware V1.10. Lens used is FA43 Limited at f/11, exposure 30s, ISO 100, shot with 2 sec self-timer enabled plus cable shutter release. Mirror lock up was disabled despite user manual said that it could be engaged. :-(
(Click to Enlarge)
For the resolution difference but the artifacts, I blog, you decide. :-)