Curve stacking and what is its purpose, as I can find nothing about it that works.

Kevin Pinkerton

• May 18, 2024 14:49
• Edited

If I have "stack presets" in the curve menu checked, I can pick multiple pre-defined curves. I have a custom preset curve that I made. Lets say I add the 5-point Allchannels preset, and tweak it. Then I add my curve, it shows them both stacked and checked at the top of the curve menu. But it seems that 5-point I add first is completely overwrites what the curve did. I can remove them. That works just fine.

I can change the insertion order and the same thing happens. Whatever curve I added last, which is at the top of the stacked list of curves, is overriding the other one below it. And on top of this, I cannot seem to get back to the other curves and tweak them. I am obviously mis-understanding the purpose of stacked curves, or that function is broken. 

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  Ian Wilson

  Moderator

  • May 18, 2024 18:27

  

  I don't think it makes sense to try to using preset stacking with the Curves tool. The curve in the tool can only be one shape. 

  Ian

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  BeO

  • May 21, 2024 11:24

  

  I think you can stack presets which work on different curves types (tabs) in the tool, e.g. Contrast RGB and Contrast Luma (so that not all your contrast adjustments intensifies your saturation) and individual color channel curves (to correct a color cast or purposeful tinting your image), but stacking curves adjustment with the more than one of the same curve type (tab) need to be done via a filled adjustment layer.

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