Specifications

Type

Type Shoe-mount E-TTL II / E-TTL autoflash Speedlite
Compatible cameras

EOS series supporting E-TTL II / E-TTL autoflash

For details, refer to the Canon website.

Flash head

Guide number

Normal flash guide number

Maximum guide number (at approx. ISO 100)

Light distribution Unit Flash coverage
14mm *1 24mm 28mm 35mm 50mm 70mm 80mm 105mm 135mm 200mm
Standard m 14.1 27.3 27.9 31.9 36.6 42.9 46.9 51.1 54.0 60.0
Guide number priority m 31.9 31.9 36.6 42.9 48.6 54.0 55.4 60.0 60.0
Light distribution priority m 27.3 27.3 27.3 29.0 33.5 36.6 42.9 46.9 51.1

1: When using the wide panel.

High-speed sync guide number

Maximum guide number (at approx. ISO 100)

Shutter speed Unit Flash coverage
14mm 24mm 28mm 35mm 50mm 70mm 80mm 105mm 135mm 200mm
1/125 m 8.8 17.0 17.4 19.8 22.8 26.7 29.2 31.8 33.6 37.3
1/250 m 7.5 14.5 14.8 16.9 19.4 22.7 24.8 27.1 28.6 31.8
1/500 m 4.9 9.5 9.7 11.1 12.8 15.0 16.4 21.7 23.0 25.5
1/1000 m 3.5 6.7 6.9 7.9 9.0 10.6 11.6 16.6 17.6 19.5
1/2000 m 2.5 4.8 4.9 5.6 6.4 7.5 8.2 12.3 13.0 14.4
1/4000 m 1.7 3.4 3.4 3.9 4.5 5.3 5.8 8.9 9.4 10.4
1/8000 m 1.2 2.4 2.4 2.8 3.2 3.7 4.1 6.4 6.7 7.5

Manual flash guide number

Maximum guide number (at approx. ISO 100)

Flash output Unit Flash coverage
14mm 24mm 28mm 35mm 50mm 70mm 80mm 105mm 135mm 200mm
1/1 m 14.1 27.3 27.9 31.9 36.6 42.9 46.9 51.1 54.0 60.0
1/2 m 10.0 19.3 19.7 22.6 25.9 30.3 33.2 36.1 38.2 42.4
1/4 m 7.1 13.7 14.0 16.0 18.3 21.5 23.5 25.6 27.0 30.0
1/8 m 5.0 9.7 9.9 11.3 12.9 15.2 16.6 18.1 19.1 21.2
1/16 m 3.5 6.8 7.0 8.0 9.2 10.7 11.7 12.8 13.5 15.0
1/32 m 2.5 4.8 4.9 5.6 6.5 7.6 8.3 9.0 9.5 10.6
1/64 m 1.8 3.4 3.5 4.0 4.6 5.4 5.9 6.4 6.8 7.5
1/128 m 1.2 2.4 2.5 2.8 3.2 3.8 4.1 4.5 4.8 5.3
1/256 *1 m 0.9 1.7 1.7 2.0 2.3 2.7 2.9 3.2 3.4 3.8
1/512 *1 m 0.6 1.2 1.2 1.4 1.6 1.9 2.1 2.3 2.4 2.7
1/1024 *1 m 0.4 0.9 0.9 1.0 1.1 1.3 1.5 1.6 1.7 1.9
1/2048 *1 m 0.3 0.6 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3
1/4096 *1 m 0.2 0.4 0.4 0.5 0.6 0.7 0.7 0.8 0.8 0.9
1/8192 *1 m 0.2 0.3 0.3 0.4 0.4 0.5 0.5 0.6 0.6 0.7

1: It cannot be used when setting high-speed sync or optical transmission wireless
Flash coverage
(focal length; for 35mm full-frame)
14mm

Wide panel: Manual

* Not compatible with EF15mm f/2.8 Fisheye or EF8-15mm f/4L Fisheye USM shooting angles of view
24mm

Zoom

  • A: Auto

    Flash coverage is set automatically, accounting for [Auto zoom for sensor size] and [Light distribution] settings at the lens focal length

  • M: Manual

    Flash coverage is set manually

    * [Auto zoom for sensor size] and [Light distribution] settings are not taken into account
28mm
35mm
50mm
70mm
80mm
105mm
135mm
200mm
Bounce angle
Bounce direction Bounce angle (approx.)
Up 0° * 45° 60° 75° 90°* 120°
Down 7°
Left 0° * 60° 75° 90° 120° 150° 180°
Right 60° 75° 90° 120° 150° 180°

Position at which the bounce lock is engaged
Flash duration

  • Normal flash

    Flash output Flash duration (Approx., sec.) Flash output Flash duration (Approx., sec.)
    1/1 1/960 1/128 1/37020
    1/2 1/1200 1/256 1/46840
    1/4 1/2600 1/512 1/57000
    1/8 1/4790 1/1024 1/80300
    1/16 1/8510 1/2048 1/82670
    1/32 1/14750 1/4096 1/91520
    1/64 1/26790 1/8192 1/107800
Color temperature information transmission

Supported
Color filter A hard-type color filter (two types) is supported.

Exposure control

Flash modes (Exposure control modes)

Flash modes and available functions

Flash mode Flash exposure compensation FEB FE lock Wireless
Radio transmission Optical transmission
E-TTL II / E-TTL autoflash *1 ○ ○ ○ ○ ○
Manual flash ○ ○
Stroboscopic flash ○ ○
Auto external flash metering ○ ○ ○ *2
Manual external flash metering
Continuous shooting priority mode ○ ○ ○
Group firing *3 ○ ○ ○ *4 ○

1: Set automatically when the camera shooting mode is set to Basic Zone modes

2: Only Group firing is available

3: Can only be set when the Speedlite is used as a sender in radio transmission wireless operation

4: Only groups set to E-TTL II / E-TTL autoflash
Effective flash range

Dim interlocking range under the following conditions

  • Sensor size: 35mm full-frame
  • Flash coverage: 50 mm
  • Aperture value: f/1.4
  • ISO 100
  • Light distribution: Standard
Firing conditions Effective flash range (approx.)
Normal flash
(Flash-ready lamp: lit)		 0.5 - 26.1 m
1.6 - 85.6 ft.
Quick flash
(Flash-ready lamp: blinking)		 0.5 - 16.0 m
1.6 - 52.5 ft.
High-speed sync
(Shutter speed: 1/250)		 0.5 - 13.8 m
1.6 - 45.3 ft.
Flash exposure compensation

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

The Speedlite's flash exposure compensation takes precedence if flash exposure compensation is performed by both the Speedlite and the camera. Users who prefer to enable flash exposure compensation by the camera should set flash exposure compensation by the Speedlite to 0.

1: Corresponds to exposure level increments on the camera
FEB

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

FEB is automatically deactivated after three shots

Can be used with flash exposure compensation and FE lock

1: Corresponds to exposure level increments on the camera
FE lock Supported
FE memory Supported
Synchronization
Wireless Flash mode 1st-curtain sync 2nd-curtain sync High-speed sync
OFF E-TTL II / E-TTL autoflash ○ ○ ○
Manual flash ○ ○ ○
Stroboscopic flash ○
Auto external flash metering ○
Manual external flash metering ○
Continuous shooting priority mode ○ ○ ○
Radio transmission
(Sender)		 E-TTL II / E-TTL autoflash ○ ○ *1 ○
Manual flash ○ ○ *1 ○
Stroboscopic flash ○
Group firing ○ ○ *1 ○
Optical transmission
(Sender)		 E-TTL II / E-TTL autoflash ○ ○
Manual flash ○ ○
Stroboscopic flash ○

1: For details on cameras that support this feature, refer to the Canon website.
Modeling lamp Supported
Modeling flash

Supported

Flash fires continuously for approx. 1 sec.

Flash recharge

Recharge time
Power supply Recharge time (approx.) Flash count (approx.)
Normal flash Quick flash
Battery Pack LP-EL 0.1 - 0.9 sec. 0.1 - 0.8 sec. 335 - 2345

Based on Canon testing standards
Flash-ready indication
Normal flash (fully charged) Quick flash Charging in progress
Flash-ready lamp Lit in red Blinking in red (8 Hz) Off
LCD panel display Not displayed Not displayed CHARGE
Recharge level indicated in a range of 1-5
Beep *1 ○ *2 ○ *3 -

1: With the relevant Personal Function (P.Fn-06, Beep) set to ON

2: With the relevant Personal Function (P.Fn-02, Quick flash) set to OFF

3: With the relevant Personal Function (P.Fn-02, Quick flash) set to ON

AF-assist beam

Infrared

  • Light emitted

    Near-infrared light

  • Compatible AF system

    TTL secondary image-forming phase-difference AF

  • Effective range

    AF points Effective range (approx.)
    At center 0.6 - 10.0 m / 2.0 - 32.8 ft.
    At periphery 0.6 - 5.0 m / 2.0 - 16.4 ft.

    Lens focal length: 28 mm or longer

    AF points: Compatible with 1-191 points
Intermittent flash firing method

The AF-assist beam does not emit small series of flashes under the following conditions.

- When the Speedlite is used as a sender in optical transmission wireless operation

- With color filter attached

  • Light emitted

    Visible light

  • Compatible AF system

    - TTL secondary image-forming phase-difference AF

    - Dual Pixel CMOS AF

    In camera compatibility, some restrictions apply

  • Effective range

    AF points Effective range (approx.)
    At center 0.6 - 10.0 m / 2.0 - 32.8 ft.
    At periphery 0.6 - 5.0 m / 2.0 - 16.4 ft.

    Lens focal length: 24 mm or longer

    Direction emitted: Straight forward

Wireless functions for radio transmission

Wireless settings
Sender

Supported

Secondary and additional units serve as sub-senders and display a “SUB SENDER” icon

Sub-senders cannot be remotely controlled by a receiver unit
Receiver Supported
Communication functions
Compliance standards IEEE 802.15.4, ARIB STD-T66
Communication method Primary modulation: OQPAK
Secondary modulation: DS-SS
Transmission frequency 2405 - 2475 MHz
Channel Channel 1 - 15
Setting: Auto / Manual
Wireless radio ID 0000 - 9999
Setting: Manual
Transmission range *1 *2 Approx. 30 m / 98.4 ft.
Groups

Up to 5 groups (A - E)

Sender units are set to Group A
Max. sender units

Up to 15

Secondary and additional units serve as sub-senders
Max. receiver units Up to 15

1: Without any obstructions between senders and receivers, and without radio interference from other devices

2: Transmission range may be shorter depending on factors such as how units are arranged, the surrounding environment, and weather conditions
Linked functions

Supports linked shooting with automatic shutter release of up to 16 cameras (sender: 1; receivers: 15) linked to shutter release on the sender camera.

Shooting is not simultaneous, because receiver cameras shoot slightly after the sender camera shutter release timing

Wireless functions for optical transmission

Wireless settings
Sender Supported
Receiver Supported
Individual receiver Supported
Communication functions
Communication method Optical pulses
Channel Channel 1 - 4
Transmission range (approx.)

From front of flash head

  • Indoors: 0.7 - 15 m / 2.3 - 49.2 ft.
  • Outdoors: 0.7 - 10 m / 2.3 - 32.8 ft.
Reception angle (approx.)
  • Horizontally: 45°
  • Upward: 27°; Downward: 20°
Groups Up to 3 groups (A - C)
Max. sender units Unlimited
Max. receiver units Unlimited

Power source

Battery pack

Battery Pack LP-EL

AA/LR6 alkaline batteries and Ni-MH batteries cannot be used
Battery level indicator Provided (display in 5 levels)
External power source Supported
Maximum flash count

Approx. 335 - 2345

With a fully charged Battery Pack LP-EL
Radio transmission wireless shooting time

Approx. 17 hours continuously

With sender flash firing disabled, and using a fully charged Battery Pack LP-EL
Auto power off

Idle time before auto power off

Status Custom Function Time
During normal operation C.Fn-01-0 Approx. 90 sec.
When set as a sender in optical wireless operation C.Fn-01-0
When set as a sender in radio wireless operation C.Fn-01-0 Approx. 5 min.
During linked shooting C.Fn-01-0
When set as a receiver in radio or optical wireless operation C.Fn-10-0 Approx. 60 min.
C.Fn-10-1 Approx. 10 min.
Standby before power ON after auto power off when set as a receiver C.Fn-11-0 Approx. 8 hr.
C.Fn-11-1 Approx. 1 hr.

The Speedlite is reactivated in response to the following operations.

  • Pressing the camera shutter button halfway
  • Pressing the test flash button

Dimensions / Weight

Dimensions
Product W × H × D (approx.)
Body 84.4 × 149.0 × 136.4 mm / 3.32 × 5.87 × 5.37 in.
Weight
Product Weight (approx.)
Body only 572 g / 20.18 oz.

Operation environment

Working temperature range 0 - 45°C / 32 - 113°F
Working humidity 85 % or less
  • All specifications above are based on Canon's testing standards.
  • Product specifications and the exterior are subject to change without notice.