Since some people want to see some processed RAW files, I have used a RAW file today. I have boosted the contrast, added strong vignetting and have also added a light sepia filter over the image.
While using the GXR today, I found an annoying behaviour when using A-mode. The camera tries to keep the ISO as low as possible and lowers the shutter speed a bit too much to 1/48. This is not a problem on a 28mm lens but on a non-stabilized 50mm lens it causes some blurry shots due to the hand shake. I need to keep an eye on this more and make sure I avoid the slow shutter speeds.
This could easily be improved with a firmware update where the user could customize the limits or Ricoh could just raise the slow shutter limit.