I read the comment about the `` rainbow effect '' , and decide to by the projector anyway , because it seem like such a good deal , and I never notice this artifact on any other projector . it definately have a beautiful picture , and make watch movie a lot of fun , but about every twenty minute when I blink or move my eye there be a bright white imagine on the screen I notice a flash stripe of red , blue and green on the border of the white part of the image . it do not ruin the movie , but it be kind of distract . also , the fact that I can make this happen by move my eye quickly create a distracting temptation . my girlfriend and roommate do not notice this at all -lrb- except when they intentionally move they eye quickly around the screen -rrb- . it be not a huge deal , but if I have to make the decision again , I would probably buy a different projector . I have never notice this effect on other projector , so I think there be something wrong with this one .