NotMyFault Posted April 4, 2021 Share Posted April 4, 2021 Problem: If you select "alpha" channel and use the color picker, the picker samples the intensity (gray level) instead of the alpha value. This makes the picker useless for alpha channel. Suggested resolution: To solve the issue, you should let the user choose which channel he wants to use for the picker (independent from which channel he selected for the curve). Proof of issue: The testfile has a gradient from left to right from 0 to 100% luminosity. The lower half is at 100% opacity. The upper part is of 50% opacity. When you open the curves adjustment, activate the picker, and pick a color/node next to one of the stars, it should always deliver a 50% alpha node. Instead, it picks the luminosity value of 25/50/75% curves alpha.afphoto Quote Mac mini M1 A2348 | Windows 10 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080 LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 iPad Air Gen 5 (2022) A2589 Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps. Link to comment Share on other sites More sharing options...
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