The YN568EX-N is a powerful, rugged, fully automatic flash that's compatible with Nikon's intelligent i-TTL flash control system both on-camera and as a remote slave. With a full discharge recycle time under 3 seconds and advanced features like high-speed sync (1/8000th of a second), rear-curtain sync and stroboscopic/multi flash control, the YN565EX-N is suitable for even the most demanding professionals and aspiring pros.