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Wireless Transmitter

Canon Speedlite Transmitter ST-E3-RT (Ver.2)

Fire compatible Speedlite flashguns over distances of up to 30m. Radio-frequency control provides reliable operation without direct line of sight. Additional features for the Speedlite EL-1.

Specifications

  • Radio frequency remote flash trigger

  • Fire selected Speedlites from 30m away

  • Part of the E-TTL II flash system

  • Controls up to 15 flashguns

  • Remote camera triggering

  • Weather sealed against dust and moisture

  • Second curtain sync, 1/8192 power and FE memory for EL-1 and later Speedlites

Additional functions supported by ST-E3-RT(Ver.2) vs ST-E3-RT

Cameras released from 2020 (e.g., EOS-1D X MkIII, EOS R5/R6 and later, but excluding EOS 850D)

Compatible cameras may need the latest firmware update.

-

-

Wireless second curtain sync

Yes

Yes

Low Power (1/8192)

Minimum flash output of 1/8192 possible with Speedlite EL-1 only (1/128 with high-speed sync).

Yes

No

FE memory

Flash output amount may slightly differ between that of E-TTL autoflash and manual flash

Yes

Yes

Other cameras from before 2020 (e.g., EOS-1D X Mark II)

Compatible cameras may need the latest firmware update.

-

-

Wireless second curtain sync

No

No

Low Power (1/8192)

Minimum flash output of 1/8192 possible with Speedlite EL-1 only (1/128 with high-speed sync).

Yes (no camera UI)

No

FE memory

Flash output amount may slightly differ between that of E-TTL autoflash and manual flash

Yes

Yes

Speedlite Transmitter ST-E3-RT ver.2- BACK SLANT LEFT

What's in the box

Everything you need to capture amazing remote flash images, just add flashes and cameras

  • Speedlite Transmitter ST-E3-RT(Ver.2)

  • Soft Case

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