Convert to Lab, work on ab channels then back to RGB?

[Athiril]

What I want to do is apply an unsharp mask in Lab mode on only a and b channels, is this possible?

In photoshop (desktop) I would convert to Lab, select the a and b channels, apply an unsharp mask with a large radius (say 80px) then convert back to RGB

 

edit: figured it out finally, tap document icon with three dots then convert document, then it shows up at the bottom

Edited April 4, 2020 by Athiril

[Dan C]

Hi Athiril,

Welcome to the forums

I'm very glad to hear you've since resolved this, many thanks for posting the solution for other users to see!