Curves tool: how to reverse the black-white orientation?

[badbluesman]

For more than 20 years, I have used the curve tool with black in the lower left and white in the upper right. Recently I got a new studio computer and set it up from scratch, rather than migrating data from my previous computer. Thus I did a fresh install of Photoshop 2020. The curve tool is oriented opposite of what I am used to: White is in the lower left corner and black is in the upper right.

How can I reverse the black-white orientation of the curve tool so that black is in the lower left and white is in the upper right?

Occasionally I have seen the curve tool reversed when opening certain files. What causes this?

[Bojan Živković]

Check that from Properties panel menu > Curves Display Options you have selected Light instead of Pigment, I think that is what you are asking for.

[badbluesman]

I cant see where that option is on the panel. Can you send a screenshot?

[Bojan Živković · Accepted solution]

Take a look at screenshot below

[badbluesman]

Thank you! Not easy to find unless you already know where it is.

[martinh29688782]

Not a clear answer! How to reverse black and white in Curves! Black should be on the left not right

[Michael Bullo]

Could it be that you are using a CMYK file but you usually use RGB files?

[badbluesman]

That might be. I have people who bring me rediculously small and substandard files and want me to make large prints of them. They never seem to have an original that I can scan. I will go back and look at the file from the other day that was causing the problem.