Am 14.03.2013 11:31, schrieb Pascal de Bruijn: > On Thu, Mar 14, 2013 at 9:29 AM, Michael Born <[email protected]> wrote: >> Am 14.03.2013 09:00, schrieb jeremy rosen: >>> I personally do a WB preset when I know I will reuse a setting for a whole >>> bunch of images >>> >> >> How do you do this? >> (maybe it's just my lacking knowledge about white balance, but the >> "temperature in" value is always changing if I copy my 4500 Kelvin style). >> >> I do it that way (always git pull of the day). >> Open a DNG in the darkroom (DR) and set "temperature in" to 4500 K. My >> history stack then contains: 0 original, 1 sharpening, 2 base curve, 3 >> white balance >> This I save as a style "wb4500" >> Then I switch to lighttable, select another DNG and double click on the >> wb4500 style. >> When I open the DNG in DR, the "temperature in" value is 4549 K. Doing >> the same with another DNG results in 4906 K. >> Why is this? I did apply a 4500 K style - not 4549 K and not 4906 K. > > Because in Darktable (currently) temperature calculations are > relative... like in GEGL, as opposed to other applications where it is > absolute... > > What is really applied to the image are the R/G/B multipliers which > are absolute.
Thank you for the explanation. It sounds plausible. But, to understand I have to read what WB really means. For example, I don't see if keeping the "temperature in" constant would be better than keeping the r/g/b multipliers constant... Best regards, Michael > 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 > ------------------------------------------------------------------------------ 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
