How to use software calibrated wide color LCD’s for Nuke sRGB work?
Posted in: NUKE from The FoundryI got a new wide color gamut monitor last week (HP LP2475w with old S-IPS panel, NOT the new H-IPS panel available in units manufactured AFTER March2009) and noticed a problem (dont’t worry it IS a NUKE workflow question, NOT about hardware).
After calibrating the whole rig using a Datacolor Spyder3 (6500k, gamma 2.2, Luminance 0.50-150 cd/m) running WinXP x64 I was expecting the fact, that like all wide color displays who DON’t store the calibration INSIDE the monitors firmware (UNlike HP Dreamcolor LP2480zx or Eizo CG243W who DO store it inside the monitors firmware) all applications who are not icc color managed, will display every image oversaturated (including the windows desktop) which is fine by me. Working for example in After Effects works flawless and with correct colors, as long as a proper working space is assigned under "project management/color setting/workspace" (for example sRgb IEC6) and no errors are made in the "interpret footage / color management" dialog.
My problem is that when I try to work in NUKE, the standard "sRgb" viewer setting with 2.2 Gamma (for working in linear space) still does display everything too saturated (especially all the reds). I know that NUKE doesn’t use the icc profiles, but is there a way to work with NUKE, correct colors and a wide color gamut monitor?
I tried the following. I generated a CMS test pattern in NUKE (color/3dLUT/TestPattern) and rendered it out as a 8bit PNG (sRGB Colorspace). Then I loaded this pattern into an after effects project (with my monitors profile assigned under Project settings/color setting/working space) and assigned "sRGB IEC6" as color management profile in the footage interpretation dialog of the cmsPattern. Then I created a composition containing the pattern and rendered the color shifted CMSpattern out (monitor output profile was assigned in render queue) and reimported it into Nuke. The pattern was used to generate a 3dlut (color/3dlut/generate LUT) and this LUT I use as the last node in every tree to see a correct sRGB color representation of the footage I work in NUKE.
Is that crazy? Am I missing something or even screwing up the colors big time? Any suggestions or better worflow solutions are welcome.
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