Description AF assist beam works with up to 61-point High Density Reticular AF system There are 18 custom functions and 7 personal functions for maximum customization Optical transmission is available in addition to radio transmission Quick Flash settings speeds up recycle time and flash duration Manual power settings from 1/1 to 1/128 power in 1/3-stop increments Flash color temperature information is automatically transmitted to the camera Automatic power off function Flash exposure compensation from -3 to 3 EV in 1/2 or 1/3 EV steps PC sync port and remote release terminal for off-camera triggering Flash duration of 1.8 ms or less, or 2.3 ms or less in Quick Flash mode Stroboscopic setting from 1-500 Hz, or 1-199 Hz during optical transmission wireless shooting Wireless flash ratio control from 1:8 to 1:1 to 8:1 in ½-stop increments Compatible with ST-E3 Speedlite Transmitter Approximately 100-700 flashes with AA alkaline batteries Locking metal foot Bracket mounting hole Built-in retractable bounce card
