Archived posting to the Leica Users Group, 2010/06/04
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]There are other advantages to running the Leica DNG files through Adobe's DNG conversion software. When you are using a cataloging software like Expression Media, the thumbnail is taken from the DNG file. Leica's is too small to be usable. With Adobe you can choose to save a larger thumbnail in the DNG. The Adobe DNG is still smaller than the Leica one and there is no loss. Tina On Fri, Jun 4, 2010 at 4:00 PM, Frank Filippone <red735i at earthlink.net>wrote: > There are truly lossless compression algorithms. And maybe compressed DNG > uses one of them.... but then the amount of compression is never fixed... > it > varies by data. So compressed, lossless, fixed compression ratio, > algorithms are not known to me... not that I know that much about the > subject....... > > Maybe compressed DNG is lossless, maybe not.......after all, if you > compress > something, the deleted bits came from somewhere..... > > Why mess with it when memory cards are so small and so cheap? > > > Frank Filippone > red735i at earthlink.net > > Just received my M9 two days ago. Have been and intend to continue > shooting DNG (raw) and doing all adjustments, even if it's only a > preset, in Lightroom. Was surprised to see the option of DNG > Compressed, a factor of two compression. In practice, does this cause > significant deterioration, and under what circumstances? > -- > Herbert Kanner > > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > > -- Tina Manley, ASMP www.tinamanley.com