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Brush issue with selection

New Here ,
Aug 20, 2021 Aug 20, 2021

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Hi!

I don't have much experience with photoshop but for some reason it won't let me brush only within my selection (inside the marching ants). For some reason the brush crosses over into the area that is not selected.
I included a video showing the problem.
Any help would be greatly appreciated!

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Community Beginner ,
Aug 20, 2021 Aug 20, 2021

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Tried checking build from selection, on the build and modify mask section?

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Adobe Community Professional ,
Aug 20, 2021 Aug 20, 2021

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Did you created your selection using channel, like Ctrl + click on channel? Try creating selection using Lasso tool, for example, or Color Range.

 

You are not painting full white color but rather gray or white with transparency, right? When using channel to click and select many pixels will be semi-selected or somewhat selected, you can paint on them but not full black or white, only percentage of it based on grey value on channel from which selection is created.

 

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Adobe Community Professional ,
Aug 21, 2021 Aug 21, 2021

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Are you trying to paint on the image, or on the Layer Mask? What does the "Bright" Layer Mask look like in the Channels panel after brushing?

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Adobe Community Professional ,
Aug 21, 2021 Aug 21, 2021

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You are painting with white with 30% opacity on the mask and it is partially (30%) revealing the layer underneath. If you are trying to do something else, let us know what you are trying to achieve.

 

How did you select? Is there feathering?

 

~ Jane

 

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Adobe Community Professional ,
Aug 21, 2021 Aug 21, 2021

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It looks like you may have luminosity selection active.  Photoshop only shows marching ants around the pixels that are more than 50% selected.  All pixels may be select at some percentage.  Save the Active selection as an Alpha channel and look at the Alpha channel thumbnail the get a better view of the selected pixels.

Capture.jpg

 

You normally adjust luminosity selections not use them as painting guides. To work smoothly on shadows and highlights

Capture.jpg

JJMack

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