Yongnuo YN568EX User Manual

Guide Number of different focal length range (at ISO 100, in meters / feet)
Flash Coverage (mm) Flash Output
14 24 28 35 50 70 80 105
1/1 15/49.2 28/91.9 30/98.4 39/127.9 42/137.8 50/164 53/173.9 58/190.3
1/2 10.6/34.8 19.8/65 21.2/69.6 27.6/90.7 29.7/97.4 35.4/116.1 37.5/123 41/134.5
1/4 7.5/24.6 14/45.9 15/49.2 19.5/64 21/68.9 25/82 26.5/86.9 29/95.1
1/8 5.3/17.4 9.9/32.5 10.6/34.8 13.7/45.2 14.8/48.6 17.7/58.1 18.7/61.4 20.5/67.3
1/16 3.8/12.5 7/23 7.5/24.6 9.7/32 10.5/34.4 12.5/41 13.3/43.6 14.5/47.6
1/32 2.7/8.9 4.9/16.1 5.3/17.4 6.9/22.7 7.4/24.3 8.8/28.9 9.4/30.8 10.3/33.8
1/64 1.9/6.2 3.5/11.5 3.8/12.5 4.9/16 5.3/17.4 6.3/20.7 6.6/21.7 7.3/24
1/128 1.3/4.3 2.5/8.2 2.7/8.9 3.5/11.4 3.7/12.1 4.4/14.4 4.7/15.4 5.1/16.7
IX. Possible problems during use and solutions
1. Please note when use the flash outdoors: For outdoor application, please avoid direct sunlight to the wireless
triggering sensor and ensure normal use of the flash.
2．Precaution for outdoor use of lambency umbrella: The lambency umbrella mounted on the flash light
outdoors may be blown down easily, and the hot shoe of the flash light may be broken. Please fix the mounting
rack or avoid outdoor use.

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)