Nuke can not read or write the chromaticities metadata from an EXR.  Sadly
it has been a feature of EXR for over 10 years. You would need to use an
external tool like OpenImageIO's oiiotool to inject the data into the file.

https://github.com/OpenImageIO/oiio
https://github.com/OpenImageIO/oiio/blob/master/src/doc/openimageio.pdf

On Thu, Jan 14, 2016 at 4:48 PM, Hugo Léveillé <hu...@fastmail.net> wrote:

>
> Hey guys
>
> I had to deal with exr files that were in ACES primaries. My experience
> with aces is somewhat limited so I just interpreted it as regular linear
> in-out. For the kind of work we had to do, it was good enough
>
> The small thing I noticed is that when playing back the comp in RV, the
> file looked a bit different. By looking at the metadata, I noticed that
> Nuke trashed the primaries in the exr render so now rv was interpreting it
> wrong. I have to ignore the primaries interpretation in rv to have a plate
> and comp that looked the same in RV.
>
> I know I am delivering the same thing that I received, but still, I am
> curious on how I can make the primaries info go all the way in the metadata
> of the comp exr. Do I have to switch Nuke in ACES lut mode or is there a
> way to do it in nuke's default config?
>
> Thanks
>
>
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