The line in the manual
Y = Power(10.0, ((t - 0.616596 - 0.03) / 0.432699)) - 0.037584
matches exactly the builtin sLog LUT, but I guess you knew that ? - I couldn't
see an sLog2 curve.
Howard
________________________________
From: Lewis Saunders <[email protected]>
To: nuke-users <[email protected]>
Sent: Thursday, 9 May 2013, 21:52
Subject: [Nuke-users] Re: sLog2 and S-Gamut from F65 camera
Francois Lord wrote:
> Is there a way to convert from aces to normal sRGB for
> viewing, without using the RRT?
You could do ACES to XYZ with the matrix on page 13:
https://github.com/ampas/aces-dev/blob/master/docs/ACES_1.0.1.pdf?raw=true
...then XYZ to sRGB with a Colorspace node.
If anyone has the actual SLog2 or S-Gamut docs (with the formulas
legible!) I'd love to see... it might be possible to extrapolate from:
https://github.com/imageworks/OpenColorIO-Configs/tree/master/aces/luts/sony
http://pro.sony.com/bbsccms/assets/files/mkt/cinema/solutions/slog_manual.pdf
To be honest I'd beg for correct LUTs from the post people, or the
usual it-looks-different problems will surely errupt :)
--
Lewis Saunders
looks different
London
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