Sorry, bb, I wasn't clear. I was referring to the Value_2 dials in both the distance pow node and the final divide node, not the Value_1 dials.

Your second paragraph explains some of this. But I also saw a version with (I think) 1.3 in Value_2 of the final Divide node. I vaguely remember something to do with simulating light coming in through a large window... the Pad, maybe. Don't worry about it, if I ever find it again there will probably be an explanation to go with it.

"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)