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LR does not have createable masks that are separate from an adjustment you’re performing. However, it does have Hue, Saturation and Luminance adjustments by built-in color-ranges, and it has an adjustment brush that can be used to paint adjustments onto specific areas.
So, for example, you can make a majority B/W image with a red-colored-rose by desaturating the entire image to B/W then painting an area with positive saturation to bring back the color in that one location.
A more specific description of what you’re trying to accomplish might yield a more specific yes-you-can or no-you-can’t answer for LR, even if the way it would be accomplished might be different than whatever tool you have in mind that formed the basis for your question.
I have photos of wooden boat skeletons under construction. These are complex, busy forms made up of ribs and spine and ring beams that at one point are all painted bright orange primer. This is what I want to retain while desaturating everything else. Too labor-intensive by hand. Does Photoshop have a feature smart enough to do this?
Give this a try.
Select the adjustment brush. Pick "desat" or something similar.
Make the brush size really big.
Turn off the auto-mask.
Select everything with the brush.
Now we want to unselect the orange:
Holding down the alt key, make the brush really big.
Still holding down the alt key, turn on auto-mask.
Still holding down the alt key, use the "+" of the brush to click on the orange.
Keep clicking on the various orange sections to get them all.
Thanks! I'll give it a try.
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