I am using a digital back at Hasselblad 500 C/M. The 3FR files of course do not contain all metadata that are needed for HDR assembly in Lightroom. I have compared the missing metadata in the XMP file with a 3FR file of a Hasselblad HD4 camera (which works well with HDR assembly in Lightrrom) and added the missing EXIF metadata manually with ExifTool to the XMP files: exif:ApertureValue, MaxApertureValue, SubjectDistance, FNumber, ShutterSpeedValue, ExposureTime, ExposureProgram. But still Lightroom gives error message of missing metadata.
Does anyone know which metadata entries in XMP files are needed to perform HDR assembly in Lightroom?
Do the files contain ISO numbers?