It is because these software believe the NEF file is sent from a unmodified camera and such NEF file has Nikon's "magic touch" in there. Why magenta tint deBayer output from some imaging software packages? Guess Canon SDK's authors have to do the same. I know this because I have to submit bug report so the developer can fix it. value) which went beyond the image decoder expectation. Some (non-active image area) pixels' values exceed 16,383 (14-bit max. Why some software give out errors? It the the entire sensor array output, including engineering pixels, is in the NEF output data field. My recollection on the specific patch is to (1) defeat R and B channels scaling, (2) output the entire sensor array information, not just the active imaging area, (3) raise bias offset such that no black clip-can see the entire bell curve, and (4) bypass camera DSP (Expeed) processing (raw -> RAW.)
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