In my personal opinion, the "in" temperature should be set to whatever the camera detected (usually available through the EXIF data), or something calculated internally (some tell me this is what dcraw and ufraw do). Initially, the "out" temperature should be the same, and can then be adjusted to make an image warmer or cooler.
As far as I understand, programs like ufraw only have a slider for the "out" temperature, and only hold the "in" temperature internally as a reference point for adjustments. This is what I expect the one-slider approach the Pascal mentioned would do. As for the presets, I can see why they currently affect the "in" temperature. It's simply a way of saying "no, 5000K is wrong, this is what the camera was set to". Makes absolute sense. In a one-slider approach where the one slider represents the "out" temperature, this doesn't make sense any more, and probably should be rethought as "I'd like to adjust the temperature to this". Cheers, Richard In message <[email protected]> on Tue, 02 Apr 2013 14:06:02 -0700, Mark Heieis <[email protected]> said: mheieis> That's the assumption I made as well but that doesn't make sense to me. mheieis> To me they should be the same. That is, why would I bother adjusting the mheieis> "in" if it is not the same as "out". I understand where this is mheieis> important for input display versus output profiles. Is this the case mheieis> then that "in" only impacts the display and "out" affects the output? mheieis> But for temperature, how would I "know" what the "out" should be set to? mheieis> mheieis> For instance, adjusting the temperature using the one of the presets (eg mheieis> Daylight) which only affects "in". So is the implication then one would mheieis> not see any affect of using this preset on any output (eg jpg for printing)? mheieis> mheieis> Is the implication then is that I have to manually adjust the mheieis> termperature "out" to whatever was set for the temperature "in"? mheieis> mheieis> mheieis> On 2013-04-02 13:53, Richard Levitte wrote: mheieis> > In message <[email protected]> on Tue, 02 Apr 2013 12:37:53 -0700, Mark Heieis <[email protected]> said: mheieis> > mheieis> > mheieis> Hi There, mheieis> > mheieis> mheieis> > mheieis> Could someone point me to an explanation of white balance temperature mheieis> > mheieis> "in" vs "out"? I've been looking but haven't been able to find any usage mheieis> > mheieis> examples or explanations. (Using DT 1.1.3) mheieis> > mheieis> mheieis> > mheieis> Much appreciated. mheieis> > mheieis> > My perception is that the "in" temperature can be used to indicate mheieis> > what temperature the camera or you perceived at the time the picture mheieis> > was shot, while the "out" temperature is what you desire for the final mheieis> > picture. mheieis> > mheieis> > If you don't want to change the color temperature that you see, just mheieis> > leave them both at the same value. Any color temperature change is mheieis> > really the difference between the "in" and "out" values. No mheieis> > difference => no change. mheieis> > mheieis> > Cheers, mheieis> > Richard mheieis> > mheieis> mheieis> mheieis> ------------------------------------------------------------------------------ mheieis> Minimize network downtime and maximize team effectiveness. mheieis> Reduce network management and security costs.Learn how to hire mheieis> the most talented Cisco Certified professionals. Visit the mheieis> Employer Resources Portal mheieis> http://www.cisco.com/web/learning/employer_resources/index.html mheieis> _______________________________________________ mheieis> Darktable-users mailing list mheieis> [email protected] mheieis> https://lists.sourceforge.net/lists/listinfo/darktable-users ------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
