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ST-E3-RT Speedlite Transmitter, Version 3

Prices as of September 26, 2026, as listed by each retailer — verify the current price on the retailer's site before purchase.

Price history tracked at Macy's price tracker

14-day low
$329.00
Sep 13 · Macy's
Best price
$329.00
−0% vs high
14-day high
$329.00
All stores
$329$329$329
Sep 13Sep 26
  • Macy's
Lowest in 14 days: $329.00 at Macy's. Highest: $329.00. Current best is 0% below the 14-day high.

About this product

The Canon ST-E3-RT Speedlite Transmitter, Version 3 is a flash control device designed for Canon DSLR cameras with a standard hot shoe. It enables wireless triggering of external flashes and supports up to five flash groups or fifteen individual flashes from a single transmitter. The transmitter features an LCD panel with backlighting for clear status display and offers E-TTL II flash metering, manual flash control, stroboscopic mode, and auto external flash metering. It includes eight custom functions and three personal function settings for tailored operation. The device is wipe-clean and imported.

  • For Canon DSLRs with hot shoe
  • Controls up to 15 flashes
  • E-TTL II and manual flash support
  • Backlit LCD display
  • Wipe-clean surface
  • 8 custom functions

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ST-E3-RT Speedlite Transmitter, Version 3 — Price History