I look forward to your analysis! Here are a gig of raws to play with:
Phase One IQ3 100mp raw file download
Doug thanks, I'm downloading the updated C1 9.0.2, but the files link is perhaps sent by email (and I couldn't enter a non USA location, if that matters)? I'll probably also have to wait for RawDigger to recognize the new Raw file format/size.
Okay, if I assume that RawDigger (RawDigger-1.2.3.435-x64.exe) reads the ISO 50 sample file correctly, then this is what I find:
ReadNoise (standard deviation)
R=5.04
G=5.04
B=5.03
G2=5.02
Blacklevel
Offset=1024 (automatic, the mean of the masked pixels is 1025.7, 1025.2, 1025.4, and 1025.4)
Saturation
R=65532
G=65532
B=65532
G2=65532
So for Dynamic Range I get for the green channels Log((65532-1024) / 5.03) / Log(2) = 13.65 stops dynamic range, instead of 15 stops. I'm not sure if the camera's 14 or 16 bit mode was used for this shot, but 13.65 stops is still impressive.
Again, this assumes that Rawdigger reads the file data correctly, and that the masked photosites contain only read-noise (QED).
Cheers,
Bart