Technical Specifications
- Type: On-camera, E-TTL II/E-TTL/TTL autoflash Speedlite
- Compatible Cameras:
- Type-A EOS cameras (E-TTL II/E-TTL autoflash)
- Type-B cameras (TTL autoflash)
- Flash Duration:
- Normal Flash: 1.2 ms or shorter
- Quick Flash: 2.3 ms or shorter
- Flash Coverage: 24 - 105 mm (14 mm with wide panel)
- Flash Range:
- Normal flash: 0.5 - 30 m (1.6 - 98.4 ft)
- Quick flash (min): 0.5 - 7.5 m (1.6 - 24.6 ft)
- Quick flash (max): 0.5 - 21 m (1.6 - 68.9 ft)
- High-speed sync: 0.5 - 15 m (1.6 - 49.2 ft), at 1/250 sec
- AF-assist Beam Range: 0.6 - 10 m (2.0 - 32.8 ft)
- Wireless Slave Channels: 4
- Power Source: Four AA Batteries
- Dimensions:
- Width: 76 mm (3.0 in)
- Height: 137 mm (5.4 in)
- Depth: 117 mm (4.6 in)
- Weight: 405 g (14.3 oz)
Source: Canon Instruction Manual