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How do I split a picture into chroma and luma?

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Matheus Soares
How do I split a picture into chroma and luma?
on Aug 22, 2013 at 10:19:40 pm

I found an image from RED's website which shows an image's chroma and luma, as you can see in the link below.

https://s3.amazonaws.com/red_3/uploads/asset_image/image/5090447a26465a3f65...

So, I want to know if there is any way to do this with Photoshop?

Thank you in advance!


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Herbert van der wegen
Re: How do I split a picture into chroma and luma?
on Aug 23, 2013 at 12:47:54 am

Convert to Lab mode, open the channels, and:
- hide the L channel to show chroma only (a&b)
- hide the a and b channels to display luminance only.

This works best if you create a new view window of the same document, and align both windows side by side.
Each window can have its own channel display setup. So, for example, the window on the right can be used to inspect luma and chroma (combined a&b) channels.

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Matheus Soares
Re: How do I split a picture into chroma and luma?
on Aug 23, 2013 at 1:20:35 am

That's awesome! Thank you! ^-^


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