Change the level of luminance luminance-based existing level?

Hello

Say I have an image where I try to extract a mask on and I found that one of the channels will serve as a good starting point. Suppose in addition that I found I want to increase the level of luminance of pixels in the range of 60-65 per every 10 levels of luminance:

i.e. all pixels including the luminance values of 60,61,62,63,64,65 would have the luminance values of 70,71,72,73,74,75 after the operation. Such a thing is possible with Photoshop?

Thank you

Matt

.

Maybe something like this will help you. A RGB additive (10, 10, 10) which applies only where the underlying pixels have gray value 60-65 using a "Mix" If condition The "blend if" can be set to consider the values in one channel, if you prefer.

Tags: Photoshop

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