This ring flash head offers shadowless, homogeneous illumination for macro photography, such as capturing jewellery, documentation in dentistry & other recording work. The Ring Flash Unit FS-RF11 may be attached to the ZUIKO DIGITAL 14-54mm & 50-200mm lenses using their bayonet mounts or to the ZUIKO DIGITAL 50mm macro lens with the Flash Adapter Ring FS-FR1. TTL auto flash macro shooting is easily conducted with the optional Macro Flash Controller FS-FC1 (sold seperately).