Pentax AF-540FGZ II Dedicated Shoe Mount Zoom Flash

The Pentax AF540FGZ II is designed with the active photographer in mind and features significant upgrades like the PENTAX original weather sealing (AW) technology and a new constant light source, making it as robust and versatile as the PENTAX weather-sealed DSLRs and lenses that it will accompany. With a guide number of 178 at ISO 100/ft (54 at ISO 100/m) the Pentax AF540FGZ II flash provides a variety of advanced flash applications, including P-TTL auto flash, high-speed synchronization and wireless P-TTL auto flash. Additionally The Pentax AF540FGZ II features a LED light to act as a constant light source for video and long exposure photography, while quick recycle times of five seconds on the AF540FGZ II ensure that a shot is never missed.