On-set color direction is a kind of Holy Grail. The biggest challenge is not with the numbers, but controlling the environment. Set is normally semi-chaotic, so detached evaluation is very often an illusion. Notwithstanding the uncalibrated nature of most portable equipment, the reality is that even a “calibrated” monitor will not look right if its not sitting in controlled conditions. Even with dailies, attempting to pilot a grade out-of-context is a very different animal than dealing with a locked cut. The guiding principle, when there’s going to be another layer of final grade, has to be ‘do no harm’, and without very tight controls, scopes, and so on, its easier said than done. Clip or crush anything — you’ll be back to square zero, or you may as well not try to do the final grade with the onset dailies. Most colorists would rather not deal with somebody else’s on-the-fly interpretation, but — if you do save your “looks” then they can at least be passed on to a final (DaVinci – family of color correctors) grade and maybe the ColorTrace will be a shortcut back to the original source media and corresponding corrections. It will be important to keep the door open to going back.
Kodak and many, many others have tried to institute approaches to translate on-set chart or numerical references (FilmTools, Gamma&Density, etc.) to transfer. Success, more often than not, is a matter of politics and luck rather than good management. The biggest single factor, though, is usually verbal communication between dP and colorist; when they’re looking at the exact same monitor in the exact same room. Otherwise, its a bit of mind-reading to really get at “intent”. Sometimes what happens on set isn’t exactly deliberate.
If control is what you’re looking for, then what you need is absolute control. And that encompasses a lot of factors.
jPo
You mean “Old Ben”? Ben Kenobi?