"I was pretty much satisfied using the main camera for rendering (I should have been more open minded) and it took me 7 years to get out of that comfort zone."

This statement is dangerously close to expressing the belief that something was gained by moving from main camera to one of the others.

It's not true.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)