Question about Curve Panel UI

[flephoto]

Same action in Curve panel, but the UI shows different between PS and LRC.

Is this a bug in LR? Thanks.

[Jao vdL]

The panel in Photoshop is a completely different action. It is a curves adjustment layer. That one works completely differently from the curves in Lightroom/camera raw. I would not expect them to behave the same exactly. However, in this case, it looks like something went wrong in Lightroom, because if you simply dragged the white point down in both examples, you also should see a knee in Lightroom just like what you see in Photoshop. When I try the same, it works correctly. What version of Lightroom are you working in?

[flephoto]

I meet this issue with LRC 13.1

[Jao vdL]

Current version is 13.3 and I don't see the issue there. It apprears to only be a UI issue on your machine too though as the histogram shows that it is correctly chopping off the headroom in your image.

[flephoto]

Yes, you are right. Update to 13.3, the curve UI is correct. Thanks.