The ARRI X21 Dome is a hot-swappable diffuser specifically optimized for SkyPanel X. It is included with every lamphead. Two units are needed for its use with X22; three for X23. The X21 Dome offers the easiest workflow for transforming the SkyPanel X into a powerful native softlight, since its installation takes no more than 2 seconds and is fully compatible with all DoPchoice and Chimera accessories designed for SkyPanel X.