Skip to main content
Known Participant
October 5, 2022
Question

Apply A LUMINANCE MASK TO A SMART OBJECT MASK? IS IT POSSIBLE

  • October 5, 2022
  • 11 replies
  • 708 views

I would love to have a way to apply a selection based on luminance applied to a Smart Object mask, just like you can do on a normal layer mask. Any thoughts?

This topic has been closed for replies.

11 replies

Known Participant
October 5, 2022

Yes. Thanks

--


Best,

Rod Klein
Artist/Writer
[Personal info removed by moderator]

George_F
Community Expert
Community Expert
October 5, 2022

I'm glad to see it worked!  Are both methods working for you?

George F, Photographer & Forum Volunteer
George_F
Community Expert
Community Expert
October 5, 2022

Having an active selection and adding a mask via Right Click > Add Filter Mask worked for me.   

Having an active selection from the Channels Panel and applying it to an existing smart filter mask also worked for me.  Have I perhaps missed a step? 

George F, Photographer & Forum Volunteer
Known Participant
October 5, 2022

SUPER! that did it! Thanks for that.

--


Best,

Rod Klein
Artist/Writer
[Personal info removed by moderator]

Known Participant
October 5, 2022

Well thanks for taking the time to reply to me. However I'm not sure we are on the same page. Here is a my simple workflow for creating a luminance mask on a normal layer:

1) Go to channels pannel

2) select the RGB channel that has the best contrast for what I'm trying to do

3) Create a selection from that specific channel ( either with keyboard shortcut or from the channels panel)

4) Now that I have a selection I can create a new layer mask based on that selection based on the luminance values from the channel I selected. 

This is not possible with the mask that comes along with a smart filter. All I can do is 1) paint on it 2) invert it 3) delete it

Alt backspace just fills at layer mask or active pixel layer with black, white, or gray.

George_F
Community Expert
Community Expert
October 5, 2022

If you desire to do so, its possible to delete a smart filter mask and make a new one by right clicking on the area under the layer that says "Smart Filters" and there is an option there to make a new mask on the smart filter.  I also confirmed it would make a mask from a luminosity selection.

George F, Photographer & Forum Volunteer
George_F
Community Expert
Community Expert
October 5, 2022

Sure!  I believe the solution you are looking for is to press Alt + Backspace to Fill with Foreground Color.  Just make sure to have white selected as your foreground color.  Let me know if you run into further hang ups.

George F, Photographer & Forum Volunteer
Known Participant
October 5, 2022

Can you explain how you create a smart filter mask based on a luminosity selection. 

As far as I can see, I can only paint on the smart filter mask, or invert it, or delete it. There's no way that I know of to create a "new" smart filter mask in the same way as a traditional layer mask.

Known Participant
October 5, 2022

Thanks for the reply. Actually I mis-stated the issue. What I want to do is apply a luminance mask (from a selection) to the mask that is created when I apply a SMART FILTER on a layer. Sorry for the confusion

Known Participant
October 5, 2022

Thanks for the reply. Actually I mis-stated the issue. What I want to do is
apply a luminance mask (from a selection) to the mask that is created when
I make a SMART FILTER on a layer.
--


{private information removed by moderator}