Archived posting to the Leica Users Group, 2007/01/11
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Well considering the image quality seen to date, if there is some loss, the orignals prior to loss have got to be unbeleivably good. I don't think I will even worry about it at all. Gene -------------- Original message from "Eric Korenman" <faneuil@gmail.com>: -------------- > right - That was my point from an earlier post. > The M8's 8 bit DNGs are derived by compressing the 14 bit CCD data. > > But does the M8's 'square root' compression technique sacrifice image > quality? > The LFI article would have you believe that there is no loss. > However the technique is inherently lossy. > > Any science / math types out there care to chime in? > > > Eric > > On 1/10/07, Alastair Firkin wrote: > > > > The DMR chip captures 14 bit directly into 16 bit DNG files. > > > Thats why DMR RAW filres are 20mb > > > And the 8 bit DNGs from the M8 are 10mb > > > > I do not believe so: the saving in space is done in the "compression" of > > the RAW file: the bit depth of the DMR and M8 are the same > > > > Cheers > > > > > > _______________________________________________ > > Leica Users Group. > > See http://leica-users.org/mailman/listinfo/lug for more information > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information