VERSATILE & HIGH POWERED ALL ROUND FLASH
UNITS FOR ENTHUSIAST PHOTOGRAPHERS
Take your creative photography to the next level
and achieve greater control over lighting with the
Speedlite 430EX III and Speedlite 430EX III-RT flash units.
Beautiful Portraits
Flash is used not only for brightening a subject, but also to deliver
greater control over lighting in your images. The 430EX III and
430EX III-RT external flash units make light control more
manageable and versatile
Bounce Shooting Function
The heads of the Speedlite 430EX III and 430EX III-RT are able to
turn freely up to 90° up, 150° to the left, and 180° to the right
enabling the flash to fire in almost any direction. Referred to as
bounce shooting, firing the flash towards ceilings or walls delivers
softer and more natural lighting
Built-in Catch Light Panel
Both the Speedlite 430EX III and 430EX III-RT feature a built in catch
light panel which delivers light that reflects in the subjects eyes and
adds life to portrait images
Radio Transmitter (430EX III-RT MODEL ONLY)
430EX III-RT supports not only optical but also radio transmission for
off-camera wireless flash shooting. The radio system gives users
greater flexibility, thanks to the slave unit's superior freedom of
placement, controllability and functional range.
(430EX III supports only optical transmission.)
Speedlite
430EX III

TYPE
Type
E-TTL II/E-TTL autoflash
Shoe-mount Speedlite
Compatible cameras
Type-A EOS cameras (E-TTL II/E-TTL autoflash)
* Autoflashis not possible when using Type-B EOS cameras.
FLASH HEAD
Guide No
Approx. 43/141.1 (at 105 mm flash coverage, ISO 100, in
meters/feet)
* Without color filter or bounce adapter
Flash Coverage
Supports a shooting angle of view with a lens focal length of
24-105 mm (with wide panel use: 14 mm)
• Automatic setting (Automatically sets the flash coverage
depending on the shooting angle of view and the image
sensor size.)
• Manual setting
Bounce
90°up, 150°left, 180°right
Bounce adapter provided can be used
Flash duration
Normal flash: Approx. 1.8 msor less, Quick flash: 2.3 msor
less
Color temperature
information transmission
Yes (lens shift-type), approx. 3.5-stop [13].
Intelligent IS with 5-axis Advanced Dynamic IS
Color filter
Color filter provided can be used
EXPOSURE CONTROL
Exposure control system
E-TTL II/E-TTL autoflash, manual flash
Effective flash range
(with EF50mm f/1.4 lens at
ISO 100)
Normal flash: Approx. 0.7 -23.6 m / 2.3 -77.4 ft.
Quick flash: Approx. 0.7 -13.6 m / 2.3 -44.6 ft. (at Guide No.
19.1/62.7, in meters/feet)
High-speed sync: Approx. 0.7 -12.8 m / 2.3 -42.0 ft. (at 1/250
sec.)
Flash exposure
compensation
±3 stops in 1/3-or 1/2-stop increments
FE lock
Possible with the camera's Multi-function button or FE
lock/AE lock buttons
High-speed sync
Possible
* During radio transmission wireless shooting, high-speed
sync is possible only with EOS DIGITAL cameras released in
and after 2012 (except with EOS 1200D)
Manual flash
1/1 -1/128 power (1/3-step increments)
Modeling flash
Fired with camera's depth-of-field preview button or
Speedlite'stest flash button
FLASH RECYCLING
Firing interval (Recycling
time)
Normal flash: Approx. 0.1 -3.5 sec.,
Quick flash: Approx. 0.1 -2.5 sec.
* When using AA/LR6 alkaline batteries
Flash-ready lamp
Lights up in red: normal flash available
Lights up in green: Quick flash available
AF-ASSIST BEAM
Emission method
Switchable in Personal Functions between Intermittent
flashes (a series of small flashes) and Infrared AF-assist
beam
Emitting small series of
flashes
Supported during viewfinder shooting, and Quick mode
during Live View shooting or movie shooting
Effective distance: At center: Approx. 0.7 -4 m / 2.3 -13.1
ft.,
At periphery: Approx. 0.7 -3.5 m / 2.3 -11.5 ft.
Infrared AF-assist beam
Center AF point in viewfinder supported
Effective distance: Approx. 0.7 -8 m / 2.3 -26.2 ft.
OPTICAL TRANSMISSION WIRELESS SLAVE FUNCTION
Connection method
Optical pulse
Wireless settings
Slave
Channel
Ch. 1 -4
Slave unit setting
Firing group A, B, C
Reception angle
±40°horizontally and ±30°vertically, facing the master
unit
Slave flash charge
indication
AF-assist beam emitter blinks and flash-ready lamp lights up
on the slave unit
CUSTOMIZABLE FUNCTIONS
Custom Functions
10 types
Personal Functions
430EX III-RT: 8 types / 430EX III: 6 types
RADIO TRANSMISSION WIRELESS MASTER/SLAVE FUNCTION (430EX II-RT ONLY)
Frequency
2405 MHz -2475 MHz
Modulation system
Primary modulation: OQPSK,
Secondary modulation: DS-SS
Wireless settings
Master/slave
Channel
Auto, Ch. 1 -15
Wireless radio ID
0000 -9999
Slave unit control
Up to 5 groups (A, B, C, D, E), up to 15 units
Slave unit setting
Firing group A, B, C, D, E
Transmission distance
Approx. 30 m / 98.4 ft.
* When there are no obstacles or obstructions between the
master and slave units with no radio interference with other
devices
* Transmission distance may be shorter depending on the
relative positions of the units, surrounding environment,
weather conditions, etc.
Flash ratio control
1:8 -1:1 -8:1, 1/2-step increments
Slave flash charge
confirmation
Flash ready icon lights up on the master unit's LCD panel,
AF-assist beam emitter blinks and flash-ready lamp lights up
on the slave unit
Linked shooting
Possible
POWER SOURCE
Speedlitepower source
Four AA/LR6 alkaline batteries
* AA/HR6 Ni-MH batteries can be used
Battery life (number of
flashes)
Approx. 180 -1200 times
* When using AA/LR6 alkaline batteries
Radio transmission wireless
shooting time
Approx. 9 continuous hours
* When Master flash firing OFF, using AA/LR6 alkaline
batteries
Auto power off
Power off after approx. 90 sec. of idle operation
* When set as radio transmission wireless master unit, or in
linked shooting: approx. 5 min.
* When set as slave unit: approx. 60 min.
DIMENSIONS AND WEIGHT
Dimensions (W x H x D)
Approx. 70.5 x 113.8 x 98.2 mm / 2.78 x 4.48 x 3.87 in.
Weight
430EX III-RT: Approx. 295 g / 10.41 oz.,
430EX III: Approx. 290 g / 10.23 oz.
(Speedliteonly, excluding batteries)
OPERATING ENVIRONMENT
Working temperature range
0 °C -45 °C / 32 °F -113 °F
Working humidity
85 % or less
Technical Specifications
All specifications above are based on Canon's testing standards.
Product specifications and the exterior are subject to change without notice.
For more information visit
canon.com.au