Paint brush tool

[Bomber]

Good morning

I'm making the subject in some of my photos colour pop ie making the background black and white.Being still a newbie at this if I go over the edge of the subject how do i subtract from where I,ve gone over the edge.

Many thanks

[GarryP]

‘Colour pop’ is easy with Photo using the Selection Brush to create a mask and adding an Adjustment.
See the attached video where I do it quickly and crudely.
If you want better results then take more care than I did when you make your selection.
Once you have your mask you can further modify it by painting on the mask layer with the Paint Brush Tool (amongst others). Paint White to let the adjustment come through and Black to take the adjustment away.

Edit: Added a video showing (crudely, again) how to paint on the mask layer to modify the ‘pop’.

Edited July 11, 2020 by GarryP
Added extra video.

[Bomber]

Apologies for the late reply but just to say thankyou for the videos.Much appreciated.

 

[GarryP]

You’re welcome.
There’s actually a quicker technique which I forgot to mention.
Since each Adjustment Layer contains its own mask you can do the same thing without needing the extra mask layer.
My latest attached video shows one way to do this (remember to select the photo before making your selection and then remember to select the Adjustment Layer before using the Flood Fill Tool, and you don’t need to Refine the selection if you don’t want to).