View Full Version : RED/r3d to nuke colorspace workflow

03 March 2012, 03:03 PM
Hi guys,

I'm starting postproduction on a short film filmed on a RED ONE Mysterium X. As we have 60 VFX shots I've been testing using .r3d files straight into Nuke. Speed wise it is just as fast, sometimes even faster, as a OpenEXR sequence and it uses way less storage and thus way more manageable.

Now, my only problem is when I compare a r3d file with a OpenEXR sequence in Nuke there is a gamma difference between the two. When I add a Gamma node with value 0.5 (which should make it a Gamma curve of 2) there is still a slight difference with getting worse in the highlights and shadows.

Is anyone familiar with this problem, and how do you go about it?

I don't want the screw the colorist by rendering bad sequences.

03 March 2012, 08:58 PM
the difference can come from many sources:

first) where did your EXRs come from? how where they converted to EXR?

second) which firmware, REDColor and REDGamma where used? which version of nuke dou you have? because RED changes sometimes REDColor and REDGamma the latest version may not supported in nuke

can you show your settings on the read node for the RED file?

04 April 2012, 05:36 PM
İ had same issue i find some propecies on r3d read node there is some option about clor space when i choice red space it looks ok

04 April 2012, 03:58 PM
Sorry for never getting back to you Pingking. I found out that the problem was in the read node of the R3D file. Under Gamma Curve. It had to be on Half Float Linear to match correctly.

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04 April 2012, 03:58 PM
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