5D MIII owner here, and *extremely* happy to hear that some others are getting clean HDMI output whilst recording RAW onto CF cards... the prospect of merging the official features of Canon's 1.2.3 with improved integration and stability of ML is incredibly exciting for me!
I'd love to ask those of you who have acheived simultaneous clean HDMI & RAW recording about the details of the video stream being recorded via HDMI. What device (if any) are you using to record the clean HDMI signal, and is the uncompressed data being encoded to a different format, such as ProRes, prior to saving?
I understand that the HDMI output, whilst "clean" and without any menus overlayed, is only YCbCr 4:2:2 with an 8-bit colour palette, which should make it inferior to the RAW video that ML enables with a full 14-bit colour palette. If the HDMI output at 4:2:2 is saved uncompressed (as it is sent via HDMI with Canon 1.2.3), then it should make for some very interesting comparisons if we can make the same shots with both 4:2:2 8-bit & RAW 14-bit uncompressed files saved concurrently!
Thank you all for your creatively intelligent hacking to port all existing functionality to 1.2.3, and even fixing previously broken features along the way!! Three thumbs up!
