Are questions germaine to the idea of cinematography on-topic?
More specifically, questions that relate to developing or creating movies.
Seeing as in the FAQ it states that:
Questions about a Movie/TV show's production.
Are listed as On-Topic, I would not have a problem with those types of questions being here.
Personally I would think it would be on topic - it would be interesting to see people's views.
I am not sure however how many expert opinions you would have here, but it might be worth a try.