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: Mask Gray in Photoshop I want to make everything that is 50% Gray in Photoshop trasnaprent. Black and White should be 100%, but all in the middle transparent. Let's compare these to images to
I want to make everything that is 50% Gray in Photoshop trasnaprent.
Black and White should be 100%, but all in the middle transparent.
Let's compare these to images to demonstrate:
Start:
Goal:
Yes the checkerboard is part of the image in order to illustrate which effect I want to accomplish
I would like to do it mathematically exact, rather than faking it.
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I've made a video showing this very thing for another question, here it is at the relevant starting point:
Going off your image:
Middle Gray is 128, 128, 128
1 stop Lighter is 191, 191, 191
1 stop Darker is 64, 64, 64
So adjust the Blend If slider accordingly:
If you want it to look more like your "Goal" though it's not actually only removing 50% than adjust the sliders to your liking.
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