Hi

The math equation used in colorspace node in Nuke assumes, that input signal is 
in linear REC709 colorspace but this is not necessarily true. So my advice: try 
to use 2 separate colorspace nodes. In the first one set "sRGB" as in and 
"REC709" as output and THEN connect the next colorspace node with linear as 
input and XYZ as output. Unfortunately it's only my theoretical advice because 
I have not a chance to check it in practice... :)


Best
Adrian

W dniu 2012-06-06 16:26:42 użytkownik John Mateer 
<[email protected]> napisał:


--
[quote="Jonathan Egstad"]Also check that you have the correct primaries 
selected as desaturated content can also look like a gamma problem.
 I think 'DCI-P3' is the one to use for a DCP.
 
 
 -jonathan
 
 On Jun 1, 2012, at 8:55 AM, Matt Plec wrote:
 [quote]Do you have the colorspace on the write node set to "linear"? If not it 
will be adding a log conversion to the image that comes in on the assumption 
that it's currently in linear RGB.
 Matt
 
 Thanks for the advice, Matt and Jonathan.  I've checked the Write nodes and 
tried linear as well as DCI P3 color spaces but had no luck.
 
 Any other thoughts?
 
 Best,
 John


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