Originally posted by Not a Number At the lowest level of compatibility the image portion of RAW files should be TIF compatible.
PEF and DNG are TIFF/EP-compliant* at the highest level as are several other RAW formats. Any standards-compliant TIFF parser should be able to read a PEF or DNG, though reading is not the same as processing the data to a displayable image. It has been a few years, but I once renamed a PEF with .tif extension and loaded the file into a program capable of displaying TIFF images. The program pulled one of the embedded JPEGs for display
Steve
* TIFF is sort of complicated. The common image format is related to, but not the same as TIFF/EP used for some RAW files. There are structural similarities between the two, but the purpose and data structures are different. FWIW, I don't understand most of it.