Fully compatible with Canon's 2.4 GHz radio flash trigger system and E-TTL / E-TTL II metering, the Speedlite YN600EX-RT II from Yongnuo is a useful accessory for your Canon camera. It features a powerful guide number of 197' at ISO 100 and 200mm as well as an impressive zoom range of 20-200mm, along with a wide-angle panel for 14mm coverage on full-frame cameras. Bounce lighting is also possible with tilt from -7 to 90Á and rotation left and right 180Á.
Along with radio transmission and reception for wireless triggering, the wireless TTL master and slave functionality of this flash also extends to standard optical pulse triggering, where the YN600EX-RT II is compatible with both Nikon and Canon flash systems. It has a recycle time of about three seconds and high-speed 1st and 2nd curtain synchronization settings. And, it has a multi flash stroboscopic mode for multiple flashes during a single exposure. It runs on four AA batteries and comes with a case and mini stand.
PC sync port for wired off-camera firing
Wireless radio system works with up to 15 channels in 5 groups
Optical transmission has access to 4 channels and 3 groups
Built-in pull-out bounce card for reflecting light forward when the flash is tilted upwards
Manual power settings from 1/1 to 1/128 with 29 total levels
Stroboscopic mode of 1-100 Hz for 1-100 flashes
Power saving mode and overheat protection
Automatic setting saving remembers your last settings
USB firmware updates