Specifications
Bounce head
LCD Panel
Electronic dial
Catchlight panel
Wide panel
21-pin multifunction shoe
Menu direct button
Stand

Specifications in detail
Power
Guide Number (ISO100) Meters
40

Zoom
Zoom Head
Auto/Manual
Coverage with Wide Panel
14mm
Auto Zoom for Sensor Size
Yes

Flash Modes
Auto Exposure Control
E-TTL II / E-TTL
High Speed Sync (FP)
Yes
Manual / Output Settings
Yes - 1/1 to 1/1024
Manual Steps
1/3-stops

Continuous Flashes in a Burst
Maximum at full power: Approx. 651
Strobe / Output Settings
Not supported
Stroboscopic Frequency
Not supported
Flash-Related Function
FE Lock
Yes
FE Memory
Yes
Flash Exposure Compensation
±3 stops
Flash Exposure Bracketing
±3 stops
Second-Curtain Flash Sync
Yes (including wireless)2

Modelling Flash
No (supported as off-camera receiver unit only)3
Modelling Lamp
No
Colour Temperature Info Communication
Yes

Wireless Flash
Transmitter
Yes
Transmission Type
Radio only
Transmitter Range
30m (approx.)4

Receiver
Yes
Max. Number of Transmitters / Receivers
15 / 15 (16 in total of any combination)
Number of Groups
5 (A/B/C/D/E)
Number of Channels
Auto, 1-15 
Remote Shutter Release
Yes
Flash Head Movement
Up
45, 60, 75, 90, 90 °
Down
0 °
Left
60, 75, 90, 120, 150 and 150 °
Right
60, 75, 90, 120, 150 and 180 °
AF Assist
AF-Assist Beam
Flash strobe
Number of AF Points Supported
n/a

Power Source
Battery
4 x AA batteries5
Battery Level Indicator
No
Minimum Recycling Time
Approx. 0.1-2.56, 7
Number of Flashes (Fully Charged Battery)
210-14008
External Power Supply
No

Construction
Dust and Water Resistance
No
Active Cooling
No
Mounting Foot Material
Metal

Miscellaneous
Custom Function
11 x C.Fn / 8 x P.Fn
(plus 3 x Custom Modes (C1, C2, C3))
Flash Settings from Camera Menus
Yes9 - On-flash Menu Direct button
External Flash Exposure Sensor
No
PC Terminal
No
Accessories (Included)
Speedlite Case
Mini Stand
Mounting foot cover
Accessories (Optional)
Speedlite Transmitter ST-E10 (Multi-Function foot)
Speedlite Transmitter ST-E3-RT (Ver.2) (Standard 5-pin foot)
EX series Speedlites with radio receiver function

Physical Specifications
Dimensions (W x H x D)
Approx. 70.6 x 116.3 x 98.3 mm
Weight 287