For a home theater in my basement, should I place sconce lighting on either side of my projector screen?

I’m setting up a home theater in my basement (just finished framing). I plan to put 2 sconces on both side walls. But I was wondering if I should put a sconce on each side of the projector screen itself? Is having some dimmed light next to the screen good for viewing or is it better to keep the screen area as dark as possible?

Thanks – Sam.