To provide a support able to compose a projection system easily.

A projection system 1 includes first and second projectors 2U and 2D and a support 4, and displays a projection image by superimposing images projected from the first and second corresponding projectors 2U and 2D onto a target projection surface. The support 4 supports the first and second projectors 2U and 2D while their respective projection distances from the first and second projectors 2U and 2D to the target projection surface differ from each other.