How bright should a projector be?
One primary factor when considering brightness is the size of the room. For small conference rooms or offices, 1,000–1,500 lumens will usually work fine. For medium-sized conference rooms or training rooms, you may want to choose a projector with 2,000–3,000 lumens. For larger venues, such as auditoriums and house of worship facilities that can hold more that 150 people, consider 3,500 lumens as the minimum brightness. Ambient light will play one of the largest factors when considering projector brightness. The projector cannot make the screen appear any darker than it already is. The gray screen that you see when the projector is turned off is the highest level of black you will be able to show in the image. Bright high-lumen projectors flood the image with such bright white light that the gray screen you see appears darker than it truly is. If you have a brightly lit room in which the lighting cannot be dimmed, add 1,000 lumens. For instance, in a small conference room or office with
