Hi Bob, Referring to your possible causes, 1) This is a possibility - could be camera hardware or firmware. If you were to take it in for servicing, they would first ensure the firmware is up to date. So I suggest you check your firmware level. 2) In the past, most corruptions have shown up as weird colour bands in the image. In your case, if corruption does occur, it would have to be in the header information 3) I have checked out older versions of camera raw and they all reject the files so it is not just your system. plus 4) Canon is writing the file correctly but Adobe is misinterpreting it. However, since the camera has been out for a few years, I think we would have heard more about it by now. My thoughts are that it is to do with 1) camera or firmware. Brian
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