https://bugs.kde.org/show_bug.cgi?id=497336
Bug ID: 497336
Summary: [retrocompatibility] Color issue with Filter Layers:
Color Adjustment curves
Classification: Applications
Product: krita
Version: 5.2.7
Platform: Appimage
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Filter Layers
Assignee: krita-bugs-n...@kde.org
Reporter: i...@davidrevoy.com
Target Milestone: ---
Created attachment 176527
--> https://bugs.kde.org/attachment.cgi?id=176527&action=edit
^ The jpg on left (color as saved in 2017), the Krita files in modern Krita on
right. The curve was applied on the "Hue" channel instead of the Lightness.
Hi,
I opened an old (2017) Krita files and saw the color rendering was surprisingly
really off. (see attachment ). The artwork uses a Color Adjustement (curves) as
a filter layer on the top of the stack.
I guess the issue comes from the fact that in 2017, the Color Adjustment curves
didn't had all the channels it has nowadays.
>From what I understand of the bug:
- in 2017, I modified the 4rth channel, and at that time the fourth was
"Lightness" (to adjust the contrast).
- in 2024, with the new Hue and Saturation channel, my curve was applied to the
4rth option: "Hue".
Files:
====
The artwork (jpg exported from the built in PNG):
https://www.peppercarrot.com/en/viewer/misc__2017-04-22_merci_by-David-Revoy.html
Krita KRA source:
https://www.peppercarrot.com/0_sources/0ther/misc/zip/2017-04-22_merci_by-David-Revoy.zip
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