Flash Type |
Direct- sync, shoe-mount flash with E-TTL/TTL autoflash control and wireless transmission/reception (E-TTL preflash, AF-assist beam, auto zoom, and bounce flash) |
Compatible Cameras |
Type-A EOS cameras (for E-TTL autoflash control). Type-B EOS cameras (for TTL autoflash control) |
Guide Number |
Normal Mode (ISO 100)High-Speed Sync (FP Flash, ISO 100) |
Flash Coverage |
Auto zoom head covers 24mm, 28mm, 35mm, 50mm, 70mm, 80mm, and 105mm lens focal lengths automatically.
Manual zoom: Enabled with zoom button
Wide panel: When the built-in wide panel covers the flash head, flash coverage is extended for 17mm lens local length |
Flash Duration |
0.2 ms or less. For quick flash: 2.3 ms or shorter |
Flash Range |
With 50mm f/1.4 lens (at ISO 100):
With normal flash: 0.5-30 meters/ 1.6- 100 feet
With quick flash: Min. 0.5 - 7.5 meters and max. 0.5 - 21 meters/: Min. 1.6 - 25 feet and max. 1.6 - 70 feet
With high- speed sync: 0.5 - 15 meters/ 1.6 - 49 feet (at 1/250 sec.) |
Flash Modes |
Normal flash; Quick flash; High-speed sync (FP flash); Stroboscopic flash: 41 flash frequency settings, 31 firing settings; Preflash: Obtains exposure reading for E-TTL autoflash control; Test flash: With test firing button; Modeling flash: Fired with the EOS-3's depth-of-field preview button |
Exposure Control Modes |
E-TTL autoflash (with Type-A cameras)
TTL autoflash (with Type-B cameras) |
Flash Exposure Compensation |
1. Automatic flash output reduction for fill flash.
2. Flash exposure compensation adjustable manually with the Speedlite up to +/-3 stops in 1/3- or 1/2- stop increments.
3. Flash exposure compensation adjustable manually up to ±3 stops in 1/3- or 1/2- stop increments with cameras equipped with flash exposure compensation function. |
Flash Exposure Bracketing |
Set with the Speedlite up to +/-3 stops in 1/3-stop or 1/2-stop increments |
Wireless Transmission System |
Optical pulse transmission |
Wireless Configuration |
Camera, master unit, and slave unit(s) |
Wireless Channels |
4 (Master unit) |
Wireless Transmission Range |
Indoors: Approx. 12 to 15 meters / 39.3 to 49.2 feet Outdoors: Approx. 8 to 10 meters / 26.2 to 32.8 feet |
Controllable Slaves |
A, B, C (3 groups) |
Power Source |
Size-AA alkaline LR6 batteries (6 V) x 4; Size-AA Nicad KR 15/51 batteries x 4 Size-AA Lithium FR6 batteries (6 V) x 4 |
External Power Source |
Compact Battery Pack CP-E2 Size-AA alkaline LR6 (AM-3) batteries (9 V) x 6; Transistor Pack E Battery Magazine TP with size-C alkaline LR14 (AM-2) batteries (9 V) x 6 Ni-Cd Pack TP (NR-SC Ni- Cd batteries x 6 in sealed pack) |
Dimensions |
80 (W) x 138 (H) x 112 (D) mm |
Weight |
405g |