The brightness of ordinary projectors is at least above 1800 lumens, and now it is mostly between 2000 and 3000 lm. If you are a projector, it may be a hand-held projection that has just come out for a year or two. To tell the truth, let alone a 260-lumen projector, even a 4000-lumen projector can't work during the day. You must close the black curtains. Or it's not well displayed.