I just started to read the documentation of dcraw and noticed this: "dcraw by default does not perform automatic white balance (AWB) on the images that it processes. It simply processes the raw image data as seen by the sensor" I always wondered how I am supposed to set the white color temperature parameter in UFRaw when I try to convert a RAW to TIFF for scannin. So, may be this is the problem: UFRaw always applies some kind of white balance adjustment. I was unable to create any usable camera profiles before. I wonder if I wil manage to do it using dcraw.