Specifications
Type
Radio transmission wireless Speedlite transmitter
Exposure control
Flash exposure compensation ±3 stops in 1/3- or 1/2-stop increments
FEB ±3 stops in 1/3- or 1/2-stop increments
High-speed synchronization
Supported
* For details on cameras that support this feature, refer to the Canon website.
Second-curtain synchronization
Supported
* For details on cameras that support this feature, refer to the Canon website.
Manual flash output setting range
1/1 to 1/8192 (in 1/3-stop increments)
* For high-speed synchronization, minimum flash output is 1/128.
* The minimum flash output level depends on the flash used.
Stroboscopic (MULTI) flash setting
Flash count 1 to 100
Flash frequency 1 to 500 Hz
Flash output setting range 1/4 to 1/8192 (in 1-stop increments)
* The minimum flash output level depends on the flash used.
Radio transmission wireless function
Communication functions
Standards compliance IEEE802.15.4, ARIB STD-T66
Transmission method
Primary modulation: OQPSK
Secondary modulation: DS-SS
Transmission frequency 2405 to 2475 MHz
Transmission channel
Channel 1–15
Setting: Auto/Manual
Transmission ID
0000 to 9999
Setting: Manual
Transmission distance
*1*2
Approx. 30 m / 98.4 ft.
Group Up to 5 groups (A, B, C, D, E)
Number of transmission
units
Up to 16 senders and receivers in total
Number of sender units
Up to 15
* Unit 2 and subsequent units will be subsenders
Number of receiver units Up to 15
*1: With no obstructions between sender and receiver and no radio interference from
other devices.
*2: The transmission distance may be shorter depending on the placement
conditions, surrounding environment, weather conditions, etc.
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