[Sascha Haber] “I mean, We all know you need two LUTs…”
!?
First LUT. Not if you were working in a calibrated environment- one that conformed with industry standards & practices.
Second LUT. Yes, the one that transforms from your originating colorspace (eg 709) to the target format, if its different (P3 XYZ should be a mathematical transform since there are no organic differences in the media and spectral display primaries among the projector population — or there shouldn’t be!). But you needn’t use it for grading unless you are in a P3 display environment…. but if you are using a DCP transform to simulate a DCP projection, to a LUT’ed 708 display simulating a DCP theatre…. uh…. wt(x)…?
Be that a corollary to the “what is the cheapest possible display that I can use to achieve questionable results” thread as it may be, my sense of the OP’s question is that it is really about simulating the “look” of a particular emulsion-based stock as the image makes its way through the neg/print process. Which would be more about the grain signature and dye curves than anything to do with overall gamut and colorspace transforms.
Apple SHAKE does something like this in their FilmGrain node, and offers a list of Eastman profiles.
’45 has a dramatically different contrast/toe than ’93, and even more wildly different from the later Vision2’s and (thank god it died!) Primetime. I remember struggling mightily with the first few batches of 79 (500T) until it was discontinued and ’77 settled down so that it was nice and sensitive at the toe and seemed to have no end to its shoulder. But blue grain like ping-pong balls, if you shot it under tungsten and tried to ‘correct-in’ the 80B.
BTW, I’ve still got a couple of day-loads of 7245 and one ’46 (which was a massively sweet emulsion) in the freezer that I don’t know if I’ll ever find a use for again…
I don’t think charging for services is a sin. In fact, I am professionally pledged to do it. Also, Yes, “usury” is. +20% compound interest on credit cards is immoral in today’s economy, when financial institutions are licensed to steal.
jPo
“I always pass on free advice — its never of any use to me” Oscar Wilde.