On 2014-01-31 [email protected] wrote: > > I don't think you have anything wrong; merely that the developers of Dt > don't know exactly what the JPEG engine inside of our cameras does.
Yes, this, and more so. If you look closely, you'll notice that it's not really a white balance issue at all, there isn't a consistent difference in color cast over the whole image. It's primarily the skin tones (or anything the camera processing engine thinks *might* be a skin tone) that have their red levels "enhanced"... this is something the camera applies to the JPEG on top of the plain old white balancing, which is not replicated by darktable, hence the difference in appearance. If you don't believe me, look at the values of a sample of the white paper object in the bottom-left corner for both images. Before I started processing raw files, I never understood why digital cameras seemed to have so much trouble correctly reproducing certain shades of orange, etc, without shifting towards magenta. I now realize that this is because camera makers are paranoid about producing "un-pleasing" skin tones, and do a lot of "magic" (and guessing about what might be an "off" skin tone) to keep that from happening. If you try to make the skin tones "pleasing" with white balance alone, the rest of the scene is thrown off. If you want to reproduce this effect somewhat, you can do it with the 'color zones' module, although exactly replicating the magic applied to the JPEG is tricky. There may be settings in your camera that will produce a more neutral coloration, closer to darktable's default ouput, but I've found that my Olympus XZ-1 does this "enhancement" to JPEGs even on 'natural' setting. ------------------------------------------------------------------------------ WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991&iu=/4140/ostg.clktrk _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
