Yongnuo YN568EX User Manual

7. FV Lock (Nikon)
Set the AE-L/AF-L function as FV Lock on the camera before using this function. At this time, you can aim at
your desired object in the viewfinder and then press the AE-L key or AF-L key, in such case, the flash light will
pre-flash to get the reading of flash exposure for the object; after you have confirmed the scene frame, press the
shutter. (This function can only be available when your camera supports it; for the setting of AE-L and AF-L, refer
to your camera manual).
8. Advanced Options Setting
YN568EX has advanced options function, you can customize speedlite function as you need, set advanced options
with button group of the speedlite or camera menu access. Setting method of the buttons of the speedlite: Keep
[Backlight/voice switch] for a long time and operate [MODE] to enter into the setting state of advanced options
function, and the LCD screen shall show set items；such as: <SE oF 3> means the application at the roof, the
speedlite shall automatically sleep if it is idle for 3 minutes, and automatically power off if it is idle for another 3
minutes after sleep.
Advanced options function supported by YN568EX is as following:
Fn NO.: 01
SL EP on： Auto power off is enabled
SP EP﹣﹣：Auto power off is disabled

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)