Famous conference photographer Duncan Davidson (TED, Web 2.0 Summit, etc) shared the following tip for conference organizers: Don’t use plasma screens on stage because they will come awful on photo.
Big screens are really great for use on stage. You can display big graphics, change them at a whim, and reuse them for the next show. There’s just one thing you have to be careful of when putting a big screen on stage. Never, ever, evar put a plasma screen on stage if you want to make a photograph with it in the background.
Why? Because when you take a sequence of photos at a reasonable shutter speed (1/250th in this case), you’ll end up with a series of photos that look like this:
Go on reading the original article to find out Duncan’s recommendations to avoid this problem. To find out more photo-tips from Duncan Davidson, watch this video-interview I made during TED Global 2010.