On Thu, Aug 31, 2017 at 10:44 PM, Ben Hutchinson <benhut1@xxxxxxxxx> wrote: > The Levels control (the dialog box you get with Ctrl+L) has a bug. When you > select Value for the channel, it is supposed to have a histogram which is > based on all of the color channels combined. However, this bug causes the > Value channel for the histogram to only consider the green channel. The > result is that when you select either Value or Green for the color channel, > you get identical histograms. The levels sliders themselves work correctly. > It's just the histogram that has the problem. > > > Early gimp (gimp-1.0.0 thru gimp-1.0.3 iirc) had some breakage on the red channel. You could start with a grayscale image, convert it to RGB and using levels (at least, maybe other tools) change an image of blacks, whites and grays to an image of reds. Here is a tutorial that utilized this bug: https://web.archive.org/web/20010107023700/http://at8.abo.fi:80/~mwikholm/com/gimp/tutor/glass/ I suspect that it has always been this way. Let me know if you file a bug report about it. This is just great! carol _______________________________________________ gimp-developer-list mailing list List address: gimp-developer-list@xxxxxxxxx List membership: https://mail.gnome.org/mailman/listinfo/gimp-developer-list List archives: https://mail.gnome.org/archives/gimp-developer-list
