I’ve made an image in GIMP and Inkscape that I’m bringing into Natron to animate a bit. In GIMP and Inkscape I added a layer filled with red (#FF0000) and set the blend mode to Exclusion.
As you can see it isn’t right! I’ve tried other layer blend modes in Natron and none of them replicate what GIMP/Inkscape produces. I’ve tried the same blend modes in Krita as well and Natron is the only one with this output. Anything I can do to correct it?
William Young on Facebook suggested that the colorspace settings in the Read node might be the problem and I think he’s right. I am reading a .psd file generated by GIMP. Imagemagick tells me that its colorspace is sRGB, and so in the Read node I set the Output Colorspace to sRGB.
I spoke with Troy outside of the forums and, although I’m still not 100% on the maths behind it, it boils down to colorspaces on the Read node and on the Write node.
I set the File and Output colorspace on Read node to Linear and in the Write node also set it to Linear.