My BenQ W7000 arrived last week, only to have to be returned because it was faulty. In the meantime I've started playing around with screen locations, and trying to approximate the look of the image by using a slide projector. Now, it's a long time since I've fired up my slide projector and I was quite surprised at how much light is spilt. See attachment.
The light on the walls beside the screen is almost exclusively spill light, not reflected. If I hold my hand to one side in front of the projector, a distinct shadow is thrown on the wall (and to a lesser extent on the carpet). Most of the light on the carpet and ceiling is, of course, reflected light.
I am wondering if a projector such as the W7000 would spill as much light, or is the light more tightly controlled in digital projectors? It really was a bit of a shock to see the whole room light up. I was expecting fairly dim conditions outside the screen area.
If I do happen to choose this location (I have several other possibilities), I would drape black material across the ceiling beams for a metre or so from the wall, and have the same material forming a border around the screen for maybe half a metre. And other suggestions as to how to reduce the light being thrown around?
But to get back to my reason for posting: would a digital projector displaying pure white under the same conditions have as much spill?