I have one tip. I'm probably the only one stupid enough to do this, but I took several pictures and could not get a single clear in focus shot. I was shooting an event and wanted to use the GS4 for quick uploads of some shots to the server and was getting really frustrated at the quality of the shots. Then I realized that there was a clear plastic film over the lens to protect it during shipping. Now I have crystal clear shots. The tip? Remove all the packaging first!