Smode can do color space conversion like other softwares.
To create the ocio import them in Smode just by dragging and dropping the file inside your compo and they will appear as
2D Modifier
Modify a 2D image
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.
Once you have created an
OCIO
Modify colors using a color space conversion from an OCIO file
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you can set a color space and a source color space if needed. You can also invert the input and output color spaces.
Just a reminder that the gamma value of your compo as an incidence on the result.
Also the viewport as a hard-coded sRGB conversion, that make it not usable to compare the colors
Usage example
Here is an example of using OCIO on a image side by side with Nuke
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Here in Nuke you have the node that convert the
S-Gamut3.Cine
to linear
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then you have your modifier that works in linear mode
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finally the viewport is converting linear to
ACES 1.0 - SDR Video
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In Smode you can place the modifier on the image to convert the
S-Gamut3.Cine
to linear ( your compo need to be in linear mode )
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then you have your modifier that work in linear mode
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finally we place a modifier at the end of the SMODE tree to convert the linear to
ACES 1.0 - SDR Video
, for that to work you need to set your output to linear,the viewport will not display the right color, only the output will
Smart Lut