I don't know if anyone here is interested in raw shooting with the GH1, but if yes, then one should be aware of following.
Apparently the camera offers a selection from five NR options. I downloaded raw files from Imaging Resources with different option; they are named _NR1, _NR3 and _NR5. I analyzed the effect of NR on the raw data and got confused by following effects:
ISO 100: I have not even checked because of the ISO 200 result
ISO 200: effect not apparent (perhaps not underexposed enough?)
ISO 400: NR5 is affecting the raw
ISO 800: NR1 and NR3 are affecting the raw
ISO 1600: NR1 is affecting the raw
ISO 3200: no effect at all
So, either Imaging Resources messed up the file names/NR options, or Panasonic messed up the firmware. Whichever the case, raw shooters need to be aware of the noise reduction, for it destroys some fine details.
