It's a 3D LUT Simon. If I try to reverse it on the Arri site, it gives me a 1D LUT. But I haven't figured out how to utilize the 1D properly. It gives a LUT for each ISO I think. 

On Fri, Feb 3, 2012 at 4:29 AM, Simon Björk <simon@stillerstudios.se> wrote:

Correct me if I'm wrong, but isn't the color operation done with a logC to rec709 a 1D lut?

2012/2/3 Brendan Bolles <brendan@fnordware.com>

On Feb 2, 2012, at 7:45 PM, Brian Maffitt wrote:

> Curious if this problem will go away with digital projection? Eventually digital projectors should be able to represent any visible color, I should think.

Any visible color, as in the entire gamut of the human eye?  We're a long way off from that, I'm afraid.  Projectors are still making images by shining red, green, and blue light up there, so that's a major constraint.  But you'd think they'd be able show everything we can see on a computer monitor at least.  Maybe they can.

Ironically, part of the forthcoming IIC/ACES standard is the "Reference Rendering Transform", which is like a standardized film look.  And like other film looks, you can't get fully-saturated colors.  Similarly, I worked on the most recent "A Christmas Carol" which is a completely digital film (including projection), and yet we still created a film look for it.  Somebody thinks that people still like that film look.  But I assume with digital projection you can opt out if you want.

Brendan


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