Canon's EX-series Speedlites (550EX, 420EX, 220EX) EX-series Speedlite Accessories Off-Camera Shoe Cord 2, ST-E2 Speelite Transmitter, *Macro Ring Lite MR-14EX, *Macro Twin Lite MT-24EX (*Conversion Lens Adapter LA-DC58C is required)         58mm Close-up Lens 500D (Conversion Lens Adapter LA-DC58C is required)         Telephoto Converter - TC-DC58A         Conversion Lens Adapter - LA-DC58C