EF-610 DG SUPER is multifunctional shoe mount type flash, designed to work with digital SLR cameras from most popular manufacturers and features a powerful Guide Number 61. Among the diverse features of this flash are the Autozoom function, which automatically sets the illumination angle in accordance with the focal length of the lens; TTL exposure control, which automatically regulates the amount of light; bounce and swivel head functions, which come in very handy for bounce photography; Light Catch Panel, which can creates a catch light in the eyes of the subject when the bounce flash mode is activated; FP flash, which is capable of synchronizing the flash illumination with high shutter speeds; and the Rear-curtain Synchro flash, which makes delayed synchro photography possible. A Wireless Slave function is also available for use with compatible cameras.