I mean the DLP rainbow effect. I have heard that this affects only a certain type of person (With special brains). I just got an Optoma EZ 737. I only got the thing today and am waiting for a screen to arrive so I have only used it with a white sheet as a screen, the picture is fantastic and I watched Finding Nemo for 20 minutes just to make sure it worked OK and to set it up. I have noticed the odd rainbow effect here or there, but I do not find it annoying and was able to ignore it. OK, my question - is it likely that other people may be affected more than I am and find it unwatchable? Also, does anyone know a good CHEAP supplier for replacement lamps.