Canon Speedlite Transmitter ST-E3-RT, Model 5743B002
For sophisticated wireless flash setups, there's nothing like the new Speedlite
Transmitter ST-E3-RT*. Facilitating radio controlled, two-way wireless transmission
up to 98.4 feet, among up to five groups or fifteen individual Speedlites, the
ST-E3-RT represents the next generation in wireless flash systems. With operational
controls similar to the new Speedlite 600EX-RT, including diverse flash metering
options, and a number of flash modes, the Speedlite Transmitter ST-E3-RT makes
complex lighting setups simple. With a compact design and highly reliable construction,
combined with a clearly laid-out information panel and buttons with back lighting
and more, the Speedlite Transmitter ST-E3-RT is an indispensible tool for advanced,
professional flash photography.
- 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 ft./30 m, all at a 360 degree angle.
The Speedlite Transmitter ST-E3-RT facilitates radio controlled, two-way wireless
transmission up to 98.4 feet, for a reliable and robust connection among master
and slave units. Communicating on 2.4 GHz frequencies, the Speedlite Transmitter
ST-E3-RT does not have the same directional limitations of traditional wireless
optical transmitters. Where other wireless signals can be interrupted by physical
obstacles, radio controlled systems excel. Fifteen transmission channels are
available, selectable manually or automatically, and radio transmission IDs
can be set to prevent misfiring in the event of signal interference on the
same channel. With the extended, more reliable range afforded by radio transmission,
ambitious photography is made easier.
- Up to 5 groups, or 15 individual flashes can be controlled via 1 transmitter.
With the Speedlite Transmitter ST-E3-RT, up to fifteen flashes in five groups
can be controlled via a single unit. Each group can be set to a different
flash mode, enabling multiple configurations for creative photography. For
example, with the Speedlite Transmitter ST-E3-RT, some flashes can be directed
to operate according to the cameras meter reading, others can be set manually;
groups can be set to overexposure or underexpose, and much, much more. With
up to fifteen flashes under the control of one transmitter, wirelessly, complex
lighting setups normally reserved for the studio are a breeze.
- Supports E-TTL II flash, manual flash, stroboscopic and auto external
For any number of shooting styles, the Speedlite Transmitter ST-E3-RT supports
E-TTL II flash metering, manual flash (1/1 to 1/128) and stroboscopic flash
(1/4 to 1/128, 1 to 500 Hz). Auto external flash metering is even possible
when the Speedlite Transmitter ST-E3-RT is mounted to the EOS-1D X or the
EOS 5D Mark III.
- Dot matrix LCD panel displays all pertinent information simultaneously
and backlit control panel means easy operation.
The Speedlite Transmitter ST-E3-RT features an all-new dot matrix LCD panel
(172 x 104 dots). This new LCD displays Flash status, flash settings and wireless
configuration with more detailed information in comparison to previous systems.
With its new screen combined with backlit operation buttons and even an internal
sound emitter, the Speedlite Transmitter ST-E3-RT is as easy to operate in
the dark as in daylight.
- 8 types of custom functions, 3 types of personal functions.
To accommodate the demands of a number of different shooting situations, the
Speedlite Transmitter ST-E3-RT can be configured with eight types of custom
and three types of personal functions. Custom functions include: auto power
off, modeling flash controls, sound, illumination and more. Personal functions
include display contrast and LCD panel illumination color for both master
and slave flashes.
- Improved hot shoe contacts for more reliable information transmission
The Speedlite Transmitter ST-E3-RT is built to the standards one would expect
from professional Canon camera systems. A newly updated hot shoe contact ensures
reliable communication between camera and transmitter. Dust and water resistance
is excellent as well: all moving parts and areas surrounding the transmitters
display and buttons are sealed for uninterrupted performance in harsh conditions.
A new dust and water resistant adapter for the mounting foot creates a dust
and water resistant seal between camera and flash.
- Width: 2.65"
- Height: 2.42"
- Depth: 3.05"
- Manufacturer Warranty (authorized online retailer):1 Year parts and
- Extended Service Warranty Available: Click the warranty tab above