Canon Speedlite Transmitter ST-E3-RT Specifications

FLASH MODES

Auto exposure control

E-TTLII/E-TTL/TTL

High speed sync (FP)

Yes

Manual / output settings

Yes - 1/1-1/128

Manual steps

1/3 step

Strobe / output settings

Yes - 1/4-1/128

Frequency

-500Hz

FLASH-RELATED FUNCTION

FE lock

Yes

Flash exposure compensation

Yes

Flash exposure bracketing

Yes

Second-curtain flash sync

No

Modelling flash

Yes

Colour temperature info communication

No

WIRELESS FLASH

Transmitter

Yes

Transmission type

Radio

Transmitter Max range approx.

Indoors: 30m
Outdoors: 30m

Receiver

No

No. of groups

5

No. of channels

15

Remote Shutter Release

Yes

AF ASSIST

AF-assist beam

No

POWER SOURCE

Battery

2 x AA batteries

External power supply

No

CONSTRUCTION

Dust and water resistance

Yes

Mounting foot material

Metal

MISC.

Custom function

8 (3 personal functions)

PC terminal

No

Compatible accessories

SPEEDLITE 600EX-RT

Dedicated flash bracket

No

DIMENSIONS & WEIGHT

Size (W x H x D), mm

67.4 x 61.5 x 77.4¹

Weight (Excluding batteries), grams

110g

Disclaimer

* Time taken to recharge flash after full discharge using Alkaline AA batteries.

** With Compatible cameras only.

Footnote

¹ Except for the dust and water prevention adaptor