The Technicolor CineStyle™ is a Picture Style (profile) for Canon EOS DSLR cameras that optimizes the dynamic range in the image by leveraging the capabilities of the Canon imaging chipset. Cinematographers and their post-production partners will have greater flexibility in color grading and finishing their projects.
From the FAQ:
Q: Can it be used for all Canon EOS cameras?
A: Although the Technicolor CineStyle was designed and optimized for the Canon EOS-5D Mark II camera, the Technicolor CineStyle can be installed and used on any current Canon EOS DSLR camera.
Q: What does it do to the image?
A: When the Technicolor CineStyle is selected in the camera it puts the standard H.264 REC709 color space into a log color space. Video images are recorded in log space. Still images are also converted into the same log color space. This is the first implementation of its kind for the Canon EOS line of cameras.
Vincent Laforet offers instructions on use and how to use the footage:
You’ll see that this gives you a flat, de-saturated image – that’s GOOD. It’s ideal to start from there and add contracts and saturation from there. Technicolor also provides you with an S-curve look-up table (LUT) to work with in your grading (color correction) software. You’ll probably want to look into RedGiant software’s Magic Bullet LUT Buddy at some pointVincetLaforet: Technicolor CineStyle Profile Available for Canon 5DMKII & other HDSLRs