Channel mixer’s gray tab provided for negative adjustments; color calibration does not. You can manually enter negative values, but if you enter, say, -0.5 and want to change it to -0.6, you have to manually enter the value. You can’t just move the slider further negative.
Is this because using negative values is not a smart thing to do anymore?
Edit: I should add that this was used with the lightness, originally HSV lightness, blend mode. It’s a technique from one of Boris’ old videos used to “set the mood” of the image: Episode 26: the boat.
I think the gray tab is now used to set how many percent of each channel you want during monochrome conversion.
If you want to enter negative values and use in lightness blend mode, probably the best way is to just use Brightness tab.
Mind you that this is a comment from a user that did not read the manual carefully or even at all.
For modules where I want the expanded scale I have a preset called slider boost and I make it the auto for a module…so in your case you could manually enter -1…this forces a rescale even if you slide back to 0 …now you can save it as a preset…I call them slider boost…
