as amazing as this sound I assure you its true . I set the resolution on my pc as 1280x720 , the Projector seem to automatically scale that down to its own native resolution . it look almost identical to the screen I see in my local Cinema . the difference be it can not do more than 144 inch well it can but it start to get a little blurry after that . it show AMAZING at 100 inch !!!! somehow no matter how big you make the screen the quality still remain amazing . the brightness be very good also . now I be speaking of the dark . if you want to view it with light on you be gonna have to move it close to do about 23 inch screen . that be if you want a very bright screen . it can do a extremely bright 23 inch screen . but for 42 inch etc be prepare to wait till night time . however at night it show marvelous even at 100 inch . I still can not get over the quality , this thing look just like my friend 's 720p hd projector when play movie only that he one be much brighter . but I prefer a dimmer projector with a bulb you never have to replace over the brighter one that require a new bulb every year . and that the beauty of this one . you get 20,000 hour . the maximum screen size I have be able to get from it that be viewable be about 150 inch . I wait till night and shine it on my neighbor 's house . it be literally as big as a cinema screen . however the image be a little bit blurry at 150 inch . I think 150 be the absolute limit anything bigger than that will require more brightness and a overall better lens and resolution etc. . however it should be note 150 inch be MASSIVE !!!!!!!!!! Jesus its as tall as I . larger than life . in close just buy this thing and you will see for yourself . it can definitely compete with a 42 inch hdtv when play movie . its very colorful etc this thing be amazing . anyone who rate this less than 5 star who do not have a defective product be a total douche bag . because the bottom line be this thing be $ 179 . if you be expect a 1080p world class projector that can do 400 inch then I be sorry to disappoint you but you be go to be disappoint . go and spend $ 15,000 on a Sony Projector you will get the best . only negative apart from need pure darkness and pure white wall for cinema experience which be expect of any projector anyways , anyways besides that only negative be you need to move the projector far far back to get big picture . it have no manual zoom . so at 10 foot you will get about 72 inch . however you will not want to go back after you see it at 100 inch .