Yongnuo YN568EX User Manual

Press the test button of master to test whether the flash works normally; if the flash does not fire, adjust the slave
unit’s angle toward the master unit and distance from the master unit.
NOTE: If ratio <A: B> is set, the slave unit in group C will not fire.
If you have the slave group set to <A> for three slave units, all three
slave units will be controlled as if they were one speedlite in slave
group A.
4. Setting Manual Flash and Stroboscopic Flash with
Wireless
As the slave unit, YN568EX supports manual flash and Stroboscopic flash.
Manual flash: Set the master unit’s flash mode to <M>, and set the flash output on master unit.
Stroboscopic: Set the master unit’s flash mode to < Multi>, and set the flash output, stroboscopic flash count,
stroboscopic flash frequency on master unit.

Yongnuo YN568EX Specifications

General

Flash Modes	TTL, Manual, Multi
Zoom Range	24-105mm
Recycle Time	Approx. 3 seconds
Power Source	4 x AA batteries
High-Speed Sync	Yes
Color Temperature	5600K
Swivel Angle	270 degrees
Guide Number	58 (at ISO 100, 105mm)
Vertical Rotation Angle	-7 to 90 degrees
Horizontal Rotation Angle	0 to 270°
Compatible Cameras	Canon or Nikon (depending on the version)
Tilt Angle	-7 to 90 degrees
Wireless Functionality	Yes, Master & Slave (Canon & Nikon)
Weight	380g (without batteries)