On Thu, Mar 14, 2013 at 1:29 PM, Russell Edwards <[email protected]> wrote: > On 2013-03-14 22:53, Michael Völker wrote: >> The file has an embedded out-of-camera image embedded. For me, it >> makes >> a lot of sense for darktable to use that image for a simple preview. > > Hmm ... I appreciate the preference setting to turn this off.
You can, it's called "don't use embedded preview jpegs but half-size raw" in preferences. But that obviously means incurring a _signficant_ performance hit in lighttable mode. > For a > quick thumbnail I suppose it might be OK but for a fullscreen preview For accuracy critical assessment you shouldn't use lighttable mode at all... The color management implementation is currently a bit of a hack in lighttable mode, it works most of the time for most people, but shouldn't be depended upon, for critical work. Only for rough initial assessment. Darkroom mode will always process your RAW in a proper color managed fashion. > I'm surprised the embedded jpeg even contains enough pixels let alone a > suitable compression level to justify a fullscreen view. Most RAWs contained three different preview JPEGs, with one typically at full resolution. > I would really > like a 100% Loupe view in lighttable (and like to think one day I may > find time to code it) but if the LT is just based on a crappy embedded > jpeg there may be little point to that. See my notes above. As I said, for critical work lighttable mode shouldn't be used at all... > It's also interesting the colours differ so much. Curves might be wrong > or should it be put down to white balance? Well first, it's wrong to expect the same output at all... The vendors RAW processing is completely proprietary, and thus logically can't be fully produced by us. We did take to time to create vendor specific curves which approximate camera output in tonality (contrast/brightness) in most cases. The color rendition however, is completely independent. More info: http://www.darktable.org/2012/10/whats-involved-with-adding-support-for-new-cameras/ > I know I have often gone and modified one of a series of bracketed > exposures and find that one then looks different in lighttable (small > size) to the others, but also different to in darktable. The latter may > be just an illusion but as for the former - what triggers DT to override > the embedded preview with its own processed image in LT mode? Regards, Pascal de Bruijn ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_mar _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
