* Klaus Post <[email protected]> [02-05-14 04:58]: > On Sun, Feb 2, 2014 at 3:46 PM, Patrick Shanahan <[email protected]> wrote: > > * Moritz Moeller <[email protected]> [02-02-14 07:55]: > > > On 1/2/14 7:24 pm, Bruce Albert wrote: > > > > I, too, am having trouble with Panasonic .RW2 files. > > > > > > I convert all my RAWs (from my GH2) to DNG with Adobe DNG Converter > > > (free) on OS X/Windows or DigiKam's dngcovert on Linux. > > > This shrinks the data by ~25% and is completely lossless (i.e. the RAW > > > data is embedded-as is and compressed, all the EXIF tags are copied too). > > > > > > I never had any trouble reading these. And I save 25% storage > > > space/bandwidth on loading. > > > > May work for your RW2 files but my Nikon NEFs suffer ~200% size gain. :^( > > Yeah - Nikon uses some lossy compression for some of their RAW formats, > which doesn't translate that well into LJPEG compression. Sony is likely to > have similar situation. However, I do believe at least Sony has an option > to switch to lossless mode, which completely disables compression. As far > as I know most Nikons also have that option - in that case you are more > likely do see compression improvements.
Yes, Nikon *has* lossey compress but also lossless which I utilize. But those are the *only* raw choices re compression. There is no choice w/o compression for raw files, at least on my D70, D200, D7100 or D3. ps: please turn off html for mailing lists. -- (paka)Patrick Shanahan Plainfield, Indiana, USA @ptilopteri http://en.opensuse.org openSUSE Community Member facebook/ptilopteri http://wahoo.no-ip.org Photo Album: http://wahoo.no-ip.org/gallery2 Registered Linux User #207535 @ http://linuxcounter.net ------------------------------------------------------------------------------ Managing the Performance of Cloud-Based Applications Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. Read the Whitepaper. http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk _______________________________________________ darktable-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-devel
