PHOTOSHOP - Academy Color Encoding System (ACES2065-1)

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  • Updated 4 years ago
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When will ACES be coming to Photoshop ?
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Christopher Rotter

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Posted 4 years ago

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Chris Cox

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Last I heard there was still argument among representatives about how to best support it in Photoshop.

Most of the EXR support is already there, but you'd have to change your working space to ACES primaries or assign an ACES profile.

The transforms should already work though color lookup tables.
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Christopher Rotter

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There is no ACES in the profiles of Photoshop ? What do you mean by "the transforms should already though lookup tables", in other words I have to load a LUT into Photoshop to work with ACES profile ?
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Chris Cox

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There are multiple LUTs for the transforms defined by ACES. Start with http://www.oscars.org/science-technol...

But I'm not sure about the LUTs, because I've been using "preliminary" ACES LUTs for a couple years now...
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Christopher Rotter

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Is there a final ACES LUT ? The Academy of Motion Pictures site doesn't list a LUT for download, although I have to try another resource.
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Chris Cox

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Again, there are multiple LUTs, one for each transform specified by ACES. Sorry I don't have a direct reference for the LUTs.
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Christopher Rotter

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That is the part I'm not understanding, there are multiple LUT's, one for each transform ?
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Chris Cox

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Yes, ACES describes multiple transforms, and each transform has an associated 3DLUT.
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Rafal Kaniewski

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One option is to use ocio to create single lut's for mutiple transforms. ocio can also output icc's if you would rather use them instead of a 3dut.

ocio has either aces 0.1.1 or aces 0.7.1 configs.

There is a tutorial on their site on making an icc viewer/proof for photoshop.
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Chris Cox

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Yes, you can concatenate the LUTs using OCIO or other tools. You can also do it in Photoshop, but need to dig into the internals of the LUTS to do it well.

OCIO's ICC profile support is probably best avoided - they seem to be very confused about how ICC profiles and color management work.
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Rafal Kaniewski

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Please expand on these options Chris.
-What other tools have aces profiles, can concatenate them and create icc luts?
-Are there any documentation/tutorials on how i would do this in Photoshop?
thx
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Chris Cox

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In Photoshop you'd just use the color lookup table adjustment layers, and the Export Color Lookup Table command. No documentation that I know of for concatenating -- you just apply multiple LUTs, then export a new LUT based on the result.

There are other tools (including SpeedGrade and After Effects with LUT Buddy) that can apply 3DLUTs and export a combined 3DLUT.