I understand, LaurieA. The above render has a transparent background, but I just converted it to jpg for upload. I layered it over a lighter background in Photoshop to see if I got the lines, but I didn't.
It's no consolation, I know, but for me it's no different in P8 than it was in PPro or P7.

"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)