Good news – Technicolor CineStyle works with the 5D Mark III already. The picture profile loads in the same way as before on previous Canon DSLRs. You will need to install the EOS Utility from the CD that came with your 5D Mark III to put CineStyle on your camera.
Cinestyle has transformed my Canon DSLR and footage looks so cinematic with it. The key to good looking CineStyle footage on Canon DSLRs is a LUT curve. Here is a guide on how to do all that, with Final Cut Pro and Adobe Premiere CS5.
Here is a gem of a ‘mood piece’ from EOSHD.com forum member Adam Gichie graded in Magic Bullet looks and shot in England.
This is some of the most nicely graded footage I have seen for some time and a big part of it is Adam’s custom in-camera picture profile for the 7D.