> Quote - By the way, maybe you don't want GC or sRGB either - maybe you want tone mapping, particularly HSV exponential tone mapping. Physics isn't everything - sometimes CG is about art.

True. I wavered before posting an experimental image using a single light and Blinn nodes (no diffuse) with GC at 1.1. It's TY2, so realism was hardly what I had in mind!

Ummm. I'm not sure how I go about posting my (your) shader now.... I know I have to pretend it's a txt file, but where do I put it so I can link to it? Anyway, here's a screenshot.

Linear Input goes into the LINEAR INPUT node.
Top 3 nodes calculate the linear part of the graph.
Bottom 7 nodes calculate the non-linear part of the graph.
The Switch nodes toggle the two components on and off, based on the threshold value.

(edit) hmmm... is that image okay, or a bit too fuzzy?

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)