Spherical projection performs spherical, latitude-longitude mapping for the U and V coordinates. For procedural textures, the W coordinate is the distance from the origin. This mapping is used for Environment textures and IESAn IES light is the lighting information representing the real-world lighting values for specific light fixtures. For more information, visit http://www.ies.org/lighting/. light distributions.
Transform - The transformation applied to the projection. Accepts a Transform node.
Coordinate Space - The coordinate space used by the projection.