i am the D.P. and my movie takes place in a school, yesterday i was testing out shots with and without lighting and i didn't see too much of a difference, but also what i noticed is that without the lighting, and with my current white balance set (3000 k - 3200 k) it has this blue look to it, which im kind of going for, its a somewhat depressing movie, so i think it captures to mood fine, its just i wanted to know if lighting is always needed, of coarse im going to be using lighting for some interior and exterior shots, but im asking if i need it all the time.