•Wireless Flash
Transmissionmethod: Optical pulse
Channels: 4
Wirelessoptions: OFF, Master, and Slave
Transmission
range
(Approx.):
Indoors: 12-15 m
/39.4
-49.2ft.,
Outdoors:8 -
10m
/26.2
-32.8
ft.
Masterunit reception angle: ±40° horizontal, ±30° vertical
Controllableslave groups: 3(A,
B,
andC)
Flashratio control: 1:8 -
1:1
-
8:1
in
1/2-stopincrements
Slave-readyindicator: AF-assist beam blinks
Modelingflash: Fired with camera's depth-of-field preview button
•Custom Functions: 14(32 settings)
•AF-AssistBeam
LinkableAF points: 1 - 45 AF points (28mm or longer focal length)
Effectiverange (Approx.): At center: 0.6 -
10m
/2.0
-32.8ft.,
Periphery: 0.6- 5 m
/2.0
-16.4
ft.
•PowerSource
Internalpower:
Batterylife
(Approx.flash count):
Wirelesstransmissions:
Powersaving:
Externalpower:
•Dimensions
(WxHxD):
•Weight(Approx.):
Foursize-AA alkaline batteries
*Size-AANi-MH and lithium batteries also usable
100-700 flashes (with size-AA alkaline batteries)
Approx. 1500transmissions (With master unit firing disabled
and size-AAalkaline batteries)
Poweroff after certain period of idle operation (Approx. 1.5 min.
to
15
min.)(60 min. if set as slave)
CompactBattery Pack CP-E4
76x137 x117 mm /3.0 x5.4 x4.6 in.
(excludingdust- and water-resistant adapter)
405g / 14.3 oz. (Speedlite only, excluding batteries)

All specificationsabove are based on Canon's testing standards.

Productspecifications and external appearance are subject to change without

notice.

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