RGB to LAB to RGB

[Josh Conley]

I want to turn an image BW but then return to RGB mode so I can use the history brush. The way I am doing it now is I change to LAB color delete channels A and B then I have to chagne to grayscale, then to RGB mode again. After that I make a snapshot in the history of the BW image in RGB mode. I then want to go back and color some of the image. But it wont let me. If i click on the original image's history to return the whole thing to color i can then use the history of the BW image on the color image with the history brush.

Why can't i go either way??

[Josh Conley]

quality.
Desaturation hurts lab printing.

[YrbkMgr]

Then use Channel Mixer as an adjustment layer no? You get fine control that way, you can stamp the layer then use the history brush as you like.

[Josh Conley]

know that there is a way to do it tho. Because i do it at work all the time. But now i am at home and it has completely slipped my mind how to do it. Guess that is what happens when you use actions too often.