1" style="border-collapse: collapse; width: 100%; max-width: 600px; font-family: sans-serif;"> Type Radio transmission wireless Speedlite transmitter 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 1/3-stop increments)

* The minimum flash output level depends on the flash used. Communication functions Standards compliance: IEEE802.15.4, ARIB STD-T66
Communication method: Primary modulation: OQPSK, Secondary modulation: DS-SS
Transmission frequency: 2405 to 2475 MHz
Channel: Channel 1–15 (Setting: Auto/Manual)
Wireless Radio 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)
Max. units for communication: Up to 16 senders and receivers in total
Max. sender units: Up to 15 (*The second and additional sender units serve as sub-senders)
Max. 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. Power Source Supplied from the camera Dust and Water Resistance Yes (Equivalent to EOS-1D Series) Operating temperature 0 – 45°C Operating humidity 85% or less Dimensions (W x H x D) Approx. 45.5 x 37.8 x 53.6 mm Weight (Approx.) 48g All specifications above are based on Canon's testing standards. Product specifications and external appearance are subject to change without notice.

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Speedlite Transmitter ST-E10