In the restoration of display contrast some values are flatten to black or white levels, so that post correction can't reveal the lost data. First note, the sample LUT is only 8-bit so if you want to do high-precision color correction (10-bit or greater), let's hope the CC tool being used is interpolating values between entries (we do this in FirstLight.) The bigger issue is the LUT contains flat spots, for which no detail can be extracted later, deep interpolation will not help. You may also color correct without using the technicolor restoration LUT, if you target output is for a video gamma you are producing some of this curves features manually (not a bad thing.)Р”В¬onsequences of applying color correction after the LUT. Somewhere in the image processing path you are likely to apply color correction the two likely places are just before or just after the CineStyle to Gamma correction LUT. The sample path without the CineStyle camera profile (Standard or Neutral) would have the camera applying something close to the stand gamma curve. So the capture through presentation pipeline is this:Р”Р„ll this bending of the light backwards and forward is about reducing the distortion and noise where it would be most perceived, in the shadows. Technicolor very nicely has provide the restoration S-curve LUT (Look Up Table) to normalize the image for video display. The resulting images from a CineStyle capture are flat and perceptually desaturated, all due to a reverse S-curve that emphasizes shadow detail as if negative contrast is applied.

In this blog entry I discuss what it might mean for your color correction workflow. For the basics on what these curves are doing, please check out my ridiculously long post 10-bit Log vs 12-bit Linear, or for a briefer coverage there is good info on this at.

I'm all for specialized encoding curves as I once helped developed the Log-90 curve used in the SI-2K (helped by Jason Rodriguez.) What Technicolor has done for Canon was a harder task, to squeeze the most out of an 8-bit heavily compressed H.264 for the best post correct-ability. The tweets have coming fast with lots of recent activity around shooting curves, particular with the release of Technicolor's CineStyle (tm) profile for Canon DSLRs.

Long s log 3 lut