I am trying to put together a video using a projector as lighting. Something in this style: [ame=https://www.youtube.com/watch?v=FyepYaE_JS4]Katy Perry Firework - A Capella Cover - Mike Tompkins - Beatbox - YouTube[/ame] The problem is that my projector is DLP technology, so you can see the horizontal lines moving. I am shooting with Canon D60 and Olympus PEN PL-1. Can somebody help me with advice how to get rid of the horizontal lines? I tried adjusting shutter speed but no success. Also, do you think they used extra lighting in the video above?