I find this topic very interesting. Having toyed with a linear workflow
in Shake with digital stills shot in RAW showed a lot of power and
control. I for one would really love to get more info in a linear
workflow with XSI and mental ray.
Andy Jones wrote:
The talk will be a somewhat loose discussion of techniques for
rendering in a way that deals with light similar to how high dynamic
range photographs deal with it. I.e., rendering images pre-gamma
correction. There was a whole long semi-controversial thread about
this a while ago, and since then, we've been incorporating linear
lighting workflow into some of our projects with really great results.
In general, gamma and color spaces doesn't seem to be something that
the average cg artist knows a whole lot about, so the goal is just to
share some of what we've learned. I'm going to try to keep the talk
pretty accessible, restricting the techniques to just
factory-installed render tree nodes (so just simple multiplicative
exposures and exponential gamma corrections). I just want as many
people as possible to walk away with at least a general sense of what
the data in their textures and renders really "means" when interpreted
as light, and what the potential benefits are to rendering this way.
If there's interest, I'd love to continue a more technical dialogue
after the presentation on this list or better yet, on XSIBase, as
there's way too much to cover in a user group presentation, and I
certainly don't claim to have all the answers on the topic. In
particular, it's pretty open-ended how a linear light workflow should
be implemented in XSI.
- Andy
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