Feature-rich flashguns tend to be big, hefty affairs that make for a somewhat top-heavy combination in the hotshoe of relatively slim mirrorless cameras. The Modus 360RT redresses the balance with its compact, light build. Even so, there’s a lot shoehorned into its diminutive frame, including RF and infrared wireless commander/remote modes, programmable stroboscopic modes and Auto FP sync, all powered by a high-capacity lithium-ion battery pack.