The Canon ST-E3-RT Speedlite Transmitter can help you take full advantage of all the features on Canon's Speedlite 600EX-RT and 430EX III-RT flashes. The ST-E3-RT makes complex lighting setups simple by facilitating radio-controlled, two-way wireless transmission up to 98.4' away, among up to five groups or fifteen individual Speedlites. It has controls similar to the Speedlite 600EX-RT, including multiple flash metering options, and a variety of flash modes. Compact design with highly reliable construction combined with a clearly laid-out information panel and buttons with back lighting make this an indispensible tool for advanced professional flash photography. The ST-E3-RT represents the next generation in wireless flash systems.
Note: Because it does not have an optical transmission function, the Speedlite Transmitter ST-E3-RT is not compatible with earlier Speedlite models such as 580EX II.
- Newly-designed wireless system uses 2-way radio wave communication for enhanced communication among master and slave units. Achieves a transmission distance of up to 98.4' (30 m), all at a 360 degree angle.
- Up to 5 groups, or 15 individual flashes can be controlled via 1 transmitter.
- Supports E-TTL II flash, manual flash, stroboscopic and auto external flash metering.
- Dot matrix LCD panel displays all pertinent information simultaneously and backlit control panel means easy operation.
- 8 types of custom functions, 3 types of personal functions.
- Improved hot shoe contacts for more reliable information transmission and operation.
- Slave operation confirmation:
Green Light--Lit: Radio Transmissions Okay
Red Light--Lit: Not Connected
Blinking: Transmission Error/ Too many units
Orange Light--Lit: Sub-master transmission
Blinking: Receiving remote release shooting, linked shooting signal
- Not compatible with earlier Speedlite models such as 580EX II
- MPN - STE3RT
- GTIN - 13803142488
|Type||Radio transmissions wireless Speedlite transmitter|
|Flash Ratio Control||Ratio control: 1:8 - 1:1 - 8:1, power 1/2-stop increments|
|Transmission Range||Approx. 98.4 ft. (30m)|
|Battery Type||2x AA/LRG Alkaline Batteries (Ni-MH and Lithium batteries can also be used) |
Battery Life: Approx. 10 hours continuously when using AA/LR6 alkaline batteries (At a room temperature of 73F/+23C).
|Dimensions||67.4 x 61.5 x 77.4 mm|
|Weight||110 g excluding battery|
|Coverage||Flash coverage: Transmission Angle: 360 all around|
|Receiver Unit SE Mode Cancellation||The test flash button can be pressed to test if the receiver units fire or cancel the auto power off status.|
|AF Assist Beam||N/A|
|Flash Exposure Confirmation||Flash exposure confirmation lamp lights in green |
* If it does not light, shooting is not performed with the standard exposure
|Sync Speed||High-Speed Sync provided (EOS-1D X and EOS 5D Mark III only)|
|Compatibility||Type A EOS cameras (E-TTL II/E-TTL autoflash)|