Hi, for those of you who want to follow the discussion about improvements to the Levels and Curves tools, here's a list of relevant bug reports with some comments. I'm adding the user list to the Cc: since feedback from users would be very helpful at this. Improve color pickers in Levels tool http://bugzilla.gnome.org/show_bug.cgi?id=125303 I would very much appreciate some feedback on this. The bug report is suggesting that the current behaviour of the gray point picker is incorrect. I tend to agree with this argument but I would like to hear other people's opinions on this. Curves dialog http://bugzilla.gnome.org/show_bug.cgi?id=125305 I don't understand what this report is talking about but perhaps one of you can enlighten us? Linear histogram in Levels tool http://bugzilla.gnome.org/show_bug.cgi?id=125306 This one has been addressed in the meantime. Improve Histogram with Luminance Channel http://bugzilla.gnome.org/show_bug.cgi?id=109161 A luminance channel (is that the correct term at all?) would indeed be a useful addition. Adding it to the Histogram means adding it to the Levels and Curves tools as well. This could be a rather trivial change but it might also turn out to be a lot more complicated then it seems. I am not entirely sure how much code depends on details of the GimpHistogramChannel enum. Sven