In theory: Take a PEF file out of a K10D and DNG as well. convert to JPEG using *exactly* the same settings. Compare output. If outputs are the same then it is lossless.
IMO, there 's no point in lossy compression. Zip archives are compressed and are lossless. Compression does NOT necessarily loss in any way. IMO JPEGs/MP3s and such things shouldn't called "compressed" BTW. Thibault Massart aka Thibouille ---------------------- *ist-D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net