|It's unlikely that any of us will ever have access to the non-linear, non-compressed, pre-encoded Râ€™Gâ€™Bâ€™ studio feed on our PCâ€™s howeverâ€¦
I have access to a lot of HD D5s and they all have values below 64 and above 940 (10-bit video, so 16 and 235 in 8-bit)
The recent IMAX WM9 title, Coral Reef has a lot of information below black and above white. Both Don and I were suprised at the amount of information.
Over xmas I actually went to visit a couple of post production houses, including Point360. They do a lot of film transfers and they don't like seeing head and toe room crushed.
MPEG-2, H.264 and VC-9 all support encoding the entire video range. from 1-254.
if you calibrate your display using DVE or AVIA Pro, then TMR will look fine. Be sure to use the patterns on DVE/AVIA Pro that will let you know when you clip above 235. (so you don't.)
To be clear, we are not saying that you should see the BTB after setting brightness. :) Set brightness using PLUGE and all will be well.
On that note, we don't recommend you use THX Optimode patterns. They are usually only correct for a given title.