This is a selection of videos of event domes where 360 projection is used. Dome projection requires a number of projectors ( 2 to 8 depending on size and area to project on) which are positioned for best display results. A preliminary adjustment is made with the use of computer software and a a grid to adjust position and focus of each projector. What is eventually projected on the dome surface is mostly computer-controlled. It is not uncommon to use projectors of 20,000 lumen or more.