Yongnuo Speedlite YN568EX III Review

Yongnuo YN568EX III Review

Yongnuo YN568EX III - front and rear view
Yongnuo YN568EX III


The Yongnuo YN568EX III is a ETTL flash with optical wireless control. It is very similar to the Canon 580EX II (now discontinued). It’s an upgraded version of the YN568EX II with faster recycle times (2 seconds instead of 3 seconds) and a USB port for future firmware upgrades. The design and user interface are the same as the previous version. Introduced February 2018.

Guide Price:  £99 / US$108

Amazon (UK) / B&H Photo (US) / Adorama (US) / Amazon (US)


The Yongnuo YN568EX III is compatible with all Canon EOS digital DSLR cameras and can act as a master and slave by communicating using the Canon EX optical wireless system (any Canon speedlite with an EX in the name). It doesn’t have radio wireless . 

Front view of flashgun


Maximum Guide Number 58m @ 105mm & ISO 100
Comparative Guide Number 39m @ 35mm & ISO 100

Zoom Head

Zoom head: Yes
Focal length coverage: Auto, 24-105mm
Coverage with flip-down diffuser: 14mm
Auto zoom for sensor size: Yes
Flash bounce card: Yes

Yongnuo YN568EX III front side view

Flash Head Tilt & Swivel

Up: 45, 60, 75 and 90°
Down: 7° (for subjects in the range of 0.5 to 2m)
Left: 60, 75, 90, 120, 150 and 180°
Right: 60, 75, 90, 120, 150 and 180°

Manual Exposure

Manual / output settings: Yes – 1/1- 1/128
Manual steps: 1/3 stop intervals

ETTL Exposure

Canon E-TTL II metering system with flash exposure compensation (FEC), flash exposure lock (FE lock) and flash exposure bracketing (FEB) 

Rear view of flash showing the LCD screen and control buttons

Wireless Communication

Radio Wireless (RF)
No. There is no in-built radio wireless communication.

Optical Wireless
Can support both Canon’s and Nikon’s optical wireless in slave mode.
Line-of-sight communication, fully compatible with Canon’s EX optical wireless.
Transmitter maximum range approximately: Indoors: 20-25m, Outdoors: 10-15m
No. of groups: 3 (A, B & C)
No. of channels: 4
Master/Slave: Can act as both a master and a slave unit (Canon) and slave (Nikon)

Auto-Focus (AF) Assist 

AF-assist beam: Yes
Number of AF points supported: 1 to ? (info not provided)
AF-assist beam type: Infra-red light pattern projection
Beam range: 0.6-10m at centre, 0.6 to 5m at periphery

Yongnuo YN568EX III contents includes a soft pouch, mini stand and manual

Other Features

High speed sync (HSS): Yes
Second-curtain flash sync: Yes
Modelling flash: Yes (fired with camera’s depth-of-field preview button)
Multi (stroboscopic) flash: Yes
Colour temperature info communication: Yes
Remote shutter release: No
Custom function: 13
Flash settings from camera menus (with compatible cameras only): Yes
Optical slave capability (S1, S2, Sc, Sn): Yes
PC terminal: Yes, 2.5mm sync port
USB port for firmware updates: Yes

Batteries & Recycling Time

Battery: 4 x AA batteries (alkaline or rechargeable Ni-MH. Lithium not recommended)
Recycling time: Approx. 0.1 to 2 seconds
Number of flashes (approx): 100-1500 with alkaline batteries
Flash duration:
Flash Colour temperature: 5600K
Optional external power supply: Yes

Yongnuo Flash mounted on top of camera

Build Quality

Dust and water resistant: No
Mounting foot material: Metal
Size: 62×72×190mm (Extended state)
Weight: 385g (excluding batteries) (4xAA batteries adds 100g)

Alternatives to the Yongnuo YN568EX III

The obvious alternative would be the Yongnuo 600EX-RT II which has all the same features but also includes radio wireless compatible with the Canon RT system and a 20-200mm zoom head rather than the 20-105mm.

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YN968EX-RT Review

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Page last checked and updated on the 19 September 2020