Key facts
- Brand
- Canon
- Model
- ST-E2
- Industry
- Electronics
- Documents
- 2
- Languages
- EN · JA
- Last added
- 2012-05-02
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Canon ST-E2 Speedlight Transmitter User Manual
The ST‑E2 is a wireless Speedlite transmitter that can control up to two Speedlite 550EX groups and works with Canon Type A EOS cameras for E‑TTL, high‑speed sync, flash exposure compensation and more. It operates within a range of about 12‑15 m indoors and 8‑10 m outdoors, and offers channel selection, flash‑ratio control, and a Save‑Energy feature.
The manual explains how to install the lithium 2CR5 battery, attach the unit to the camera hot shoe, select channels, and use the various flash functions. It also includes specifications, FCC compliance information, and troubleshooting tips for reliable wireless operation.
Canon ST-E2 specifications
| Indoor transmitting range | 12 to 15 meters (39.4 to 49.2 ft) |
|---|---|
| Outdoor transmitting range | 8 to 10 meters (26.2 to 32.8 ft) |
| Battery type | Lithium 2CR5 |
| Number of selectable channels | 4 |
| Maximum Speedlite groups controlled | Two |
All Canon ST-E2 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
How many Speedlite groups can the ST‑E2 control?
It can control up to two Speedlite 550EX groups.
What battery does the ST‑E2 use?
The ST‑E2 uses a single lithium 2CR5 battery.
How can I change the wireless channel?
Press the CH button; each press cycles to the next channel number. Stop when the desired channel is displayed.
What battery does the ST‑E2 use?
It uses one CR5 lithium battery.