I would assume it would be based on the setup, usually projectors are still able to be visible with the lights on, not as well but still pretty decently. school projectors (if they even still use those) were good examples of that where they would project onto the white board with the lights on
So do you sit in a dark room pretending it’s day outside or do you turn on the lights and ruin he projection?
I would assume it would be based on the setup, usually projectors are still able to be visible with the lights on, not as well but still pretty decently. school projectors (if they even still use those) were good examples of that where they would project onto the white board with the lights on