Canon Speedlite 600EX-RT Flash

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Box Contents

Canon Speedlite 600EX-RT Flash
Soft Case
Color Filter Holder SCH-E1
Soft Case for Filter Holder
Color Filter SCF-E1OR1 (Light Orange)
Color Filter SCF-E1OR2 (Dark Orange)
Case for Filters
Instruction Book (PDF Only)


As a Canon top-of-the-line flash, the Speedlite 600EX-RT takes the best features from existing models and adds functionality for enhanced digital photography. The 600EX features a new wireless multiple flash system using radio wave communication that provides more precise control over as many as five groups of flashes. There's also more power, with a guide number of 197' (60 m) at ISO 100, a zoom flash head that covers a 20-200mm range, and updated AF assist beam that's compatible with Canon's 61-point High density Reticular AF.

The included color filter holder and two orange color filters multiply your creative options--the holder is compatible with Canon as well as third-party gelatin filters. The 600EX offers several other improvements--it's been redesigned, with a metal hot shoe, improved dust- and water-resistance and body strength, plus the ability to control flash functions and settings from the camera menu.  A dot matrix LCD panel and backlit button deliver much-improved visibility.

The flash supports all current versions of TTL, including evaluative E-TTL II. This is great for photographers who shoot high contrast or reflective subjects, like those encountered in wedding photography. Photographers can now capture every detail from the black of tuxedos to the white of wedding dresses.




On-camera, E-TTL II/E-TTL/TTL autoflash Speedlite

Compatible cameras

All EOS SLR cameras (flash metering system may differ depending on the camera)

E-TTL II autoflash (Type-A cameras): all EOS digital SLR Camera from the EOS-1D Mark II onward, EOS 30V and EOS 300X.

E-TTL autoflash (Type-A cameras): enabled with all EOS SLR cameras from the EOS 50/50E onward (except EOS 88)

TTL autoflash (Type-B cameras): enabled with all other EOS SLR cameras.

Guide No. (at ISO 100 in m)

Zoom position

Guide No.























Flash coverage

20 - 200 mm (14 mm when using wide panel) 
- Auto zoom
- Manual Zoom
- Flash head swing/tilt (bounce flash)

Bounce direction

Up: 0-90° 
Down: 0-7° 
Left: 0-180° 
Right: 0-180°

Flash duration

Normal flash: 1.8 ms or shorter, Quick Flash: 2.3 ms or shorter

Autozoom control for the image size

When the Speedlite is attached to an EOS digital camera (from EOS-1D Mark II onwards), the flash head will zoom to obtain optimal flash coverage according to the camera's image size. (Full-frame, APS-H Size, APS-C size).

Color temperature information transmission

Flash color temperature information transmitted to compatible camera when flash is fired

Color filter

Can be used

Exposure Control 

Exposure control type

E-TTL II/E-TTL/TTL autoflash, auto*1/manual external flash metering, manual flash, stroboscopic flash

Effective Flash range 
(with EF 50mm f/1.4 USM, ISO 100)

Normal flash: approx. 0.5 - 30 m 
Quick Flash: 0.5-12m (min.), 0.5-21m (Max.)
High-speed sync: approx. 0.5 - 15 m (at 1/250 sec.)

Flash exposure compensation

±3 stops in 1/3- or 1/2-stop increments


±3 stops in 1/3- or 1/2-stop increments (when used with flash exposure compensation)

FE lock

Press the camera’s <M-Fn>, <FEL> or <*> button

High-speed sync

(During radio transmission wireless shooting, high-speed sync is possible only with EOS digital cameras released since 2012.)

Manual flash

1/128 - 1/1 power (1/3-stop increments)

Stroboscopic flash

Provided (1 - 500 Hz) 
(1 Hz to 199 Hz during optical transmission wireless shooting)

Shutter Curtain Synchronization

1st-curtain or 2nd-curtain synchronization can be set

Flash exposure confirmation

Flash exposure confirmation lamp lights

Modeling flash

Fired with camera’s depth-of-field preview button

Flash Recycling (with AA-size alkaline Battery)

Recycling time

Normal flash: 0.1-5.5 sec. 
Quick flash: 0.1-3.3 sec

Flash-ready indicator

Normal flash: Red Flash exposure confirmation lamp lights
Quick flash: Green Flash exposure confirmation lamp lights

Radio Transmission Wireless Function


IEEE802.15.4, ARIB STD-T66


2405 - 2475 MHz

Modulation system

Primary modulation: OQPSK, secondary modulation: DS-SS

Wireless settings



Auto, Ch. 1 - 15

Wireless radio ID

0000 - 9999

Slave unit control

Up to 5 groups*2 (A/B/C/D/E), up to 15 units

Transmission distance (Approx.)

* When there are no obstacles or obstructions between the master unit and slave 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

Flash ratio control

8:1-1:1-1:8 in ½-stop increments (A:B)

Slave-ready indicator

The flash icon lights on the master unit’s LCD panel, slave unit’s AF-assist beam emitter blinks, flash-ready lamp lights

Shutter speed limitation

No *2 (However, for camera that released before 2012, the maximum shutter sync speed must be set one-step slower)

Remote release function


Linked shooting


Optical Transmission Wireless Function

Transmission method

Optical pulse

Wireless settings



Ch. 1 – 4

Slave unit control

Up to 3 groups (A/B/C)

Transmission distance (Approx.)

Indoors: 0.7 - 15m 
outdoors: 0.7 - 10m (at the front) 
Reception angle: ±40° horizontal, ±30° vertical, facing the master unit

Flash ratio control

8:1-1:1-1:8 in ½-stop increments (A:B)

Slave-ready indicator

Slave unit’s AF-assist beam emitter blinks, flash-ready lamp lights

AF-assist Beam

Compatible AF system

1 - 61 AF points (28 mm or longer focal length)

Effective range (Approx.)

At center:  0.6-10m 
Periphery:  0.6- 5m

Power Source

Internal power source

Four size-AA Alkaline/Ni-MH/lithium batteries

Battery life (Approx. flash count)

100-700 flashes (with size-AA alkaline batteries)

Radio transmission wireless shooting time

Approx. 9 continuous hours 
(When Master flash firing OFF, size- AA alkaline batteries)

Optical transmission wireless shooting count

Approx. 1500 transmissions 
(Master unit firing disabled, size-AA alkaline batteries)

Power saving

Power off after approx. 90 sec. of idle operation 
(When set as slave unit: 60 min.)
(When set as radio transmission wireless master unit and linked shooting: 5 min.)

External power source

Compact Battery Pack CP-E4


Custom Function

18 (42 settings)

Personal Function

7 (14 settings))

Camera-controlled Speedlite

Supported *1

Dust and water-resistance

Yes*4 (with EOS-1D series camera)

PC Terminal


Dimensions (W x H x D)(mm)

79.7 x 142.9 x 125.4
(excluding the dust- and water-resistant adapter)

Weight (without batteries) (g)



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