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Speedlite Transmitter ST-E3-RT (Ver.3)

HK$2,980.00
Out of stock

The Speedlite Transmitter ST-E3-RT (Ver.3) is a compact 2.4GHz radio transmission wireless flash Sender with an improved “Selection Dial” for easy operation. It can control up to 5 groups1 and 15 receiver units for wireless multiple flash photography with a max. 30m transmission distance. The Speedlite Transmitter ST-E3-RT (Ver.3) fully supports the features of flagship professional Speedlite EL-1 during wireless flash photography, including 1/8192 microflash output, wireless 2nd curtain synchronization2 3 and FE (Flash Exposure) memory3. When paired with speedlite featuring radio transmission such as Speedlite EL-5, 600EX II-RT or 430EX III-RT, Speedlite Transmitter ST-E3-RT (Ver.3) also supports wireless 2nd curtain synchronization2 3 and FE (Flash Exposure) memory3. The Speedlite Transmitter ST-E3-RT (Ver.3) is also equipped with reliable high strength metal mounting foot4 and dust and water resistant design5 to meet the demand of professional photographers.

Easy to use design

The Speedlite Transmitter ST-E3-RT (Ver.3) is a compact 2.4GHz radio transmission wireless flash Sender with E-TTl II/E-TTL autoflash, Manual Flash, Stroboscopic Flash and Group control support.
It features an easy to read back-lit LCD control screen and an improved “Selection Dial” for easy operation.
The Speedlite Transmitter ST-E3-RT (Ver.3) is also equipped with reliable high strength metal mounting foot4 and dust and water-resistant design5 to meet the demand of professional photographers.

2.4GHz Radio transmission wireless flash

Speedlite Transmitter ST-E3-RT (Ver.3) ’s 2.4GHz band radio transmission can reach up to 30m transmission range.
It is not affected by environment lighting and does not require direct line-of-sight, allowing for better creative freedom and reliability.
Its radio transmission supports 15-channels with 10000 radio transmission ID to minimize interference and controls up to 5 groups1 and 15 receiver units.


Creativity Unbounded

Group Control

 

Control up to 15 compatible Speedlites with up to 5 groups1 for different settings in radio transmission wireless flash.

Microflash

 

By using 1/8192 microflash6 with a Speedlite EL-1 during wireless flash photography, a more refined touch can be added to scenes in low light.

Wireless 2nd curtain flash synchronization

 

Using a slow shutter speed with wireless 2nd curtain flash synchronization2 to bring more dynamic to the subject.

Wireless 2nd curtain flash synchronization is compatible with all speedlites featuring Radio Transmission3.   

FE (Flash Exposure) memory function

 

When FE memory function is enabled in Personal Function (P.Fn), the E-TTL flash output can be maintained when switching to Manual flash output7.   

Remote Shooting

 

For EOS camera with the Speedlite Transmitter ST-E3-RT (Ver.3) installed, it can be triggered by compatible speedlites set as receivers8 to shoot remotely for enhanced shooting flexibility.

Moreover, with the Linked Shooting function8, up to 16 EOS cameras with compatible speedlite transmitters or speedlites installed can be triggered wirelessly at once in order to capture the same subject from several angles at the same time.

Specifications

Type Radio transmission wireless Speedlite transmitter
Exposure control system E-TTL II/E-TTL autoflash, manual flash, stroboscopic flash and group control1
Flash exposure compensation ±3 stops in 1/3- or 1/2-stop increments
Flash exposure bracketing (FEB) ±3 stops in 1/3- or 1/2-stop increments
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.

High-speed synchronization Supported1
Second-curtain synchronization Supported2
FE Lock Supported (Using a camera button)
FE Memory Supported
Modeling flash Supported
*Not available for the EOS R series or EOS M series.
Standards compliance: IEEE802.15.4, ARIB STD-T66
Transmission frequency 2405 - 2475 MHz
Communication method Primary modulation: OQPSK;
Secondary modulation: DS-SS
Channel Auto, Ch. 1 - 15
Wireless radio ID 0000 - 9999
Receiver unit control Up to 5 groups1 (A/B/C/D/E), up to 15 units
Transmission distance (m) (Approx.)

30m
*When there are no obstacles or obstructions between the sender unit and receiver unit, and no radio interference with other devices.
*The transmission distance may be shorter depending on the relative positions of the units, surrounding environment and weather conditions.

Linked Shooting Supported
Wireless flash shooting time Approx. 10 continuous hours (When using AA/LR6 alkaline batteries)
Custom Functions 8
Personal Functions 4
Power source 2 AA alkaline / Ni-MH batteries
Dimensions (W x H x D) (mm) 67.4 x 61.5 x 77.4mm (excluding the dust- and water-resistant  adapter)
Weight (g) 106g (excluding batteries)

1 Applicable to EOS digital cameras released from 2012 and onwards (except EOS 60Da/1500D/1300D/1200D/3000D).
2 Applicable to EOS digital cameras that support wireless second-curtain sync. As of February 2024, the compatible models are EOS digital cameras released from 2021 and onwards, EOS R5*, EOS R6*, EOS-1D X Mark III*, and EOS M50 Mark II* (*must be updated to the latest firmware).
3 Applicable to all Speedlite models featuring Radio Transmission including Speedlite EL-1, EL-5, 600EX II-RT, 600EX-RT and 430EX III-RT (as of February 2024).
4 Multi-function Shoe Adapter AD-E1 is required when attaching to EOS R camera with Multi-Function Shoe.  
5 With dust-and-water-resistant EOS camera, however it is not recommended for use under rain.
6 The minimum flash output level depends on the flash used.
7 Incompatible with EOS-1D and EOS-1Ds.
8 Requires EOS digital cameras released from 2012 onwards (except EOS 60Da/1500D/1300D/1200D/3000D) with Speedlite EL-1, 600EX II-RT, 600EX-RT, 430EX III-RT or ST-E3-RT, ST-E3-RT (Ver.2), ST-E3-RT (Ver.3) attached.

Box content:

  • Speedlite Transmitter ST-E3-RT (Ver.3)
  • Soft Case
  • Instruction Manual
  • Purchase Record Card
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