Feedback / Development: Filmic, Baby Step to a V2?

[Eary_Chow]

@kram10321

the magical 12.473931188 again though!

-12.473931188 is the log2 value, convert to exposure value is -10
and exposure value of 15 will be log2 value of 12.526068812

Learnt about it in Troy’s post in another thread:

More OCIO Colorspaces

I was hoping that getting the configuration out there as a starter would spur these sorts of explorations. What I wasn’t expecting was folks to dive in so quickly. Given that most of the folks in this thread are of a level to understand the transforms, I’ll try to explain what is going on in more detail. Also, if you haven’t already done so, there is a little bit more information on LUTs and their formation over at this answer at Stack Exchange. The primary stanza in question is already provid…

I also updated the line in the config to use the two log2 values accordingly.

@kram10321

Oh and if you change the function on one side, the other side probably also needs to change

The current way to do it is, in config, enocde the log, then in the LUT, decode the log, so no need to re-encode it. That’s what Troy meant.