Paco, Look like Exiv2 author have started a new tiff/ep parser in current Exiv2 implementation : http://dev.robotbattle.com/cmtinfo_svn.php?r=10 This is want mean that tiff will be supported for next Exiv2 release and that we can use this tiff parser to make new RAW file parser (NEF, MRW, etc...) Gilles