For the Nikon D300, there are 3 choices - lossy, lossless and no
compression.
On 5 February 2014 15:24, Patrick Shanahan <[email protected]> wrote:
> * 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
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> Registered Linux User #207535 @ http://linuxcounter.net
>
>
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