RPS (Dot Line) RS-DF120 FlexiDome Flash Diffuser Combo for Canon 580EX & 580EX II, Pentax AF-540FGZ, Phoenix DZBIS-112, Sigma EF-500 & EF-530 Flashes The RPS FlexiDome Flash Diffusion combo includes the FlexiDome Flash Diffuser with the standard inverted dome and amber dome. Compatible with Canon 580EX & 580EX II, Pentax AF-540FGZ, Phoenix DZBIS-112, Sigma EF-500 & EF-530 Flashes. Ideal for vertical flash shots where the flash coverage is still similar to horizontal shots, due to the large rounded shape of the diffuser. The included standard inverted dome allows you to softly diffuse direct light with a large, soft source. Easily fits into a camera bag.