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Frequency Separation blurring the image

Community Beginner ,
May 23, 2023 May 23, 2023

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Hello, I hope you are having a great day!

While retouching I have encountered a small blurring of pixels when I use Frequency Separation...

Has anyone else come across this issue and is there a fix/ am I doing anything wrong?

 

Kind Regards,

Pandos

 

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Actions and scripting , Experiment , macOS , Windows

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correct answers 1 Correct answer

Community Expert , May 23, 2023 May 23, 2023
quote

I have used a variety of actions and tried creating my own. The blur happens on all..

I will try using 16 bpc..

You say 'when performed correctly'.. do you have an action that you would want to share?

 

Kind regards,

Pandos


By @Pandos


Try my action link in the following topic:

 

https://community.adobe.com/t5/photoshop-ecosystem-discussions/frequency-separation-high-frequency-layer-isn-t-working/m-p/13709185

 

Edit: Here it is https://www.dropbox.com/s/vhoal39t9ygl6tt/Frequency%20Splitter%20v4%20Conditional.atn

...

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Advocate ,
May 23, 2023 May 23, 2023

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It's not a Ps command and there are several ways of doing that. You'll probably need to share exactly what you are doing and when you are seeing this... 😉

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Community Expert ,
May 23, 2023 May 23, 2023

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16 bpc should be lossless when performed correctly.

 

8 bpc is generally "visually lossless" but yes, there can sometimes be minor softness introduced in some areas for some images, often flat areas with grain/noise when viewed enlarged.

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Advocate ,
May 23, 2023 May 23, 2023

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If his eye is that good, there are a few methods that claim to have no loss/damage, even after repeated application.

One is the free plugin by Retouch4me.

https://retouch4.me/frequencyseparation

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Community Beginner ,
May 23, 2023 May 23, 2023

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I have used a variety of actions and tried creating my own. The blur happens on all..

I will try using 16 bpc..

You say 'when performed correctly'.. do you have an action that you would want to share?

 

Kind regards,

Pandos

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Community Expert ,
May 23, 2023 May 23, 2023

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quote

I have used a variety of actions and tried creating my own. The blur happens on all..

I will try using 16 bpc..

You say 'when performed correctly'.. do you have an action that you would want to share?

 

Kind regards,

Pandos


By @Pandos


Try my action link in the following topic:

 

https://community.adobe.com/t5/photoshop-ecosystem-discussions/frequency-separation-high-frequency-l...

 

Edit: Here it is https://www.dropbox.com/s/vhoal39t9ygl6tt/Frequency%20Splitter%20v4%20Conditional.atn

 

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Community Beginner ,
May 23, 2023 May 23, 2023

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Thank you! I have not looked at it on my Eizo yet, but on my mac it looks like it is working!! 🙂

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Community Expert ,
May 26, 2023 May 26, 2023

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So how did you go with using 16 bpc mode evaluating on the Eizo? You don't even need a good monitor to test as a difference blend mode test is enough to show no change.

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Advocate ,
May 23, 2023 May 23, 2023

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I think all the "original" methods cause damage if no "tricks" are used, IIRC because one of the used blend modes throws away half of the values. I don't know if this is what he sees, as it's subtle stuff... The ones that did find a solution will boast this in a video (Retouch4me, Retouching Toolkit).

Anyway, I'm otherwise not an FS expert...

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