Help with Moire please!

[Monique Graham]

Hi Damien,

I'm having trouble with Moire again.  Please see attached close up crops, both from the same photo.  I've also included a slightly larger crop in case that helps.  There are about 7 photos in this series where the blue shirt is the main problem.  The boy's pants only seem to be a problem in this photo.

I'm fairly certain there wasn't sharpening applied to the Raw File.  I'm in the unfortunate situation where the external hard drive I've been working from has stopped working and I'll need to recover the files, so I can't check the Raw files.  I did save the PSD files to my dropbox though, so this is what I have to work with for now.

I'd really appreciate your help!

Thanks so much,

Monique

[Damien Symonds]

First, let's try the easy approach.  Add a Solid Color layer of pants colour, set to "Color" blend mode, masked on to the pants, and see if it works.

Then try the same for the shirt.

Let me know if it's not satisfactory.

[Monique Graham]

Thanks so much Damien, 

Tried what you suggested, the pants are looking much better, the shirt I managed to get rid of the rainbow but the waves remain. Please see attached.

[Damien Symonds]

Ok, maybe this Channel Mixer layer?

• R 0, +90, +10, -4
• G 0, +90, +10, 0
• B 0, +90, +10, +4

[Monique Graham]

Yep, looking much better now, I think it's acceptable?

[Damien Symonds]

Yep.

If I've got the colour wrong, you can still use your Solid Color layer from the first method to correct it.

[Monique Graham]

Yep, that helped to bring the colour back.

Can't thank you enough Damien!  You are a lifesaver!

[Damien Symonds]

On 9/26/2022 at 11:20 PM, Monique Graham said:

Hi @Monique Graham, may I have your permission to use these photo snippets in a little class I'm writing about moire editing?

[Monique Graham]

Hi Damien, sure, happy for you to use these snippets in your class.

[Damien Symonds]

Thank you so much.