: How to flip Brightness and preserve color in Photoshop? as the title is saying. Using Photoshop, I want to invert the luminosity of my image using adjustment-layers, while the colors stay the
as the title is saying.
Using Photoshop, I want to invert the luminosity of my image using adjustment-layers, while the colors stay the same.
So here is my example image:
Dark Background (it's totally black in this example)
Light Text (it's totally black in this example)
two glowing edges
To explain it a little further.
The expected result based on this image should look like the following:
White Background
Black Text
Colors are the same
The Problems
I don't know how I can prevent the colors from being manipulated as well.
If I try to invert the image with an Invert Adjustment Layer with the blend mode of luminosity (which is the last in the list) it won't give me the desired result.
As you can see here, the Hue of the glow is still the same.
But the brightness has been flipped too.
I also tryed to calculate Channels in LAB-Mode and could not come up with a decent looking result.
The Solution
I don't want to manually select the text & the shape and fill it with the opposing color. That destroys the edges and looks awful.
Quick thought at the end: I need an selection by saturation if that's possible ... ;-)
More posts by @Heady304
2 Comments
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Like you discovered and others have said, Lab colorspace is perfect for this. As far as how to do it with adjustment layer, well invert the lightness by moving the left side all the way up and right side all the way down. At this point it might look a little harsh. To fix that you can then bring one of the points in a little effectively reducing the tonal range.
Try the following to see why this doesn't work;
Open your image
Go to the LAB channel mode
In your channels look at the lightness channel (L)
This is your image stripped off all color
If you invert this you will see you get pretty dark shadows
no colors have been manipulated here, only the luminosity
therefore > the problem lies with the luminosity.
You simply get shadows that are too dark.
This layers example should get you close.
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