On Wed, Oct 07, 2009 at 01:31:37PM -0600, steve harley wrote: > On 2009-10-07 12:46 , P. J. Alling wrote: >> TIFF format is however very lose, and can accommodate compression >> schemes that are not commonly used, which would make such files >> difficult to read at a future date. > > i can't digest the specs quickly enough to be sure, but my sense is that > TIFF/EP (the ISO standard subset of TIFF which DNG specifically uses) is > intended to solve that problem; anyone know for sure?
More to the point, the DNG spec is explicit on the compression scheme to be used. IMO that's why we had to wait for the K-7 before Pentax supported compressed DNGs; although they had coded a compression scheme for PEFs it didn't use the algorithm called for by the DNG spec, and so DNGs were written uncompressed. New firmware in the K-7 fixes that. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
