Technical Specifications
- Type: Direct-contact, shoe-mount flash with E-TTL/TTL autoflash
- Compatible Cameras:
- Type-A EOS cameras (E-TTL autoflash)
- Type-B cameras (TTL autoflash)
- Flash Duration: 1.2 ms or less with normal flash
- Flash Coverage: 24, 28, 35, 50, 70, and 105 mm
- Flash Modes:
- Normal sync
- High-speed sync (FP flash)
- Test firing
- Modeling flash (at 70 Hz for 1 sec)
- Flash Range:
- With normal sync: 0.7 - 24.2 m
- With high-speed sync: 0.7 - 12.7 m (at 1/180 sec)
- AF-assist Beam Range: 0.7 - 7 m
- Wireless Slave Channels: 4
- Power Source: Four AA Batteries
- Dimensions:
- Width: 71.5 mm (2.8 in)
- Height: 123 mm (4.82 in)
- Depth: 99.4 mm (3.89 in)
- Weight: 300 g (10.6 oz)
Source: Canon Instruction Manual