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High-Performance Hot Shoe Contacts for Reliable Information Transmission and Operation.
Up to 5 groups, or 15 Individual Flashes can be Controlled via one 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.
Wireless Rear Curtain Synchronization.
Minimum Output Range of 1/8192.
FE Memory built-in so you can lock-in an E-TTL flash exposure level.
In the box
Speedlite Transmitter ST-E3-RT (Ver. 3)
Soft Case
Warranty Card (USA/CA)
Returns Policy
The Canon store will accept, for return of exchange, defective or unopened merchandise purchased at the Canon Online Store within 30 days of the ship date.
Speedlite Transmitter ST-E3-RT (Ver. 3) is available to buy in increments of 1
Overview
The Speedlite Transmitter ST-E3-RT (Ver.3) provides continued support of Canon DSLRs that feature a standard hot shoe (not compatible with multi-function shoe equipped cameras). Many of the most popular features carry over to version 3, such as wireless rear curtain synchronization to capture ambient light trails and convey a sense of speed for moving subjects. An expansive minimum output range (down to 1/8192 power), and FE Memory as part of the radio transmitter so you can lock-in an E-TTL flash exposure level, even in complex multi-flash set-ups, and continue to use it for the same scene or subject. Radio controlled, two-way wireless transmission up to 98.4 ft., up to five groups or fifteen individual Speedlites, a dot matrix LCD with backlighting, intuitive controls and more.
Product Disclaimer
* When used with the Speedlite EL-1 in combination with an EOS R5, EOS R6, EOS-1D X Mark III or EOS M50 Mark II camera. Some features will work with older Speedlite models such as 600EX II-RT, 600EX-RT and 430EX III-RT, and previous EOS cameras, but not all. As of February 3, 2021.
Technical Specifications
Flash
Type
Radio transmissions wireless Speedlite transmitter
Compatible Cameras
Type A EOS cameras (E-TTL II/E-TTL autoflash)
Sync Speed
High-Speed Sync provided
Flash Exposure Confirmation
Flash exposure confirmation lamp lights in green
* If it does not light, shooting is not performed with the standard exposure
AF Assist Beam
N/A
Wireless Functions
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.
Transmission System
Radio Transmission
Transmission Range
Approx. 98.4 ft. (30m)
Flash Ratio Control
1:8 - 1:1 - 8:1, power 1/2-stop increments
Flash Coverage
Transmission Angle: 360° all around
Receiver Operation Confirmation
Green Light
Lit: Radio Transmissions Okay
Red Light
Lit: Not Connected
Blinking: Transmission Error/ Too many units (Sender units + receiver units = more than 16 units)
Orange Light
Lit: Sub-sender transmission
Blinking: Receiving remote release shooting, linked shooting signal
General
Power Source
AA/LRG Alkaline Batteries x2(Ni-MH and Lithium batteries can also be used)
SE Mode
Battery Life: Approx. 10 hours continuously *When using AA/LR6 alkaline batteries used (At a room temperature +23°C/73°F).
Dimensions
Power off after 5 min. of idle operation
Weight
2.7 (W) x 2.4 (H) x 3.0 (D) in. / 67.4 (W) x 61.5 (H) x 77.4 (D) mm
