The Panasonic PT-LB383 is a bright projector suitable for business or education needs. There is no need to turn the lights off as your PT-LB383 is powerful enough to project clearly in light rooms due to the bright 3800 lumens. You will be able to project in a very bright room to a large audience with no problems at all. A high brightness and high contrast ratio have been achieved in a lightweight body for the PT-LB383.