- E-TTL II evaluative flash metering for critically accurate exposure
- High output with maximum guide number 58 at 105mm setting (ISO 100, metres)
- Autozoom and colour temperature information for improved flash with selected digital SLR cameras
- Fully featured wireless flash capability, with built-in slave and transmitter, using multiple Speedlites
- Dust and water resistance improves reliability under harsh conditions
- Metal mounting foot with new locking mechanism improves connection and communication reliability
Powerful and Efficient
- E-TTL II flash metering utilising lens distance information with pre-flash to balances flash with ambient light for more evenly lit and natural looking photos even if the subject includes highly reflective objects
- High power flash output with maximum guide number of 58 at 105mm setting (ISO 100, metres)
- Highly efficient power supply design providing up to 20% improvement in flash recycle time
- Autozoom control with selected digital SLR cameras to automatically match the flash head to the effective focal length of the camera ensuring greater accuracy and optimal output
- Colour temperature information transmission with selected digital SLR cameras ensuring optimal colour balance setting for flash output
Professional Features
- High-speed (FP) sync mode, Flash Exposure Bracketing (FEB) and Flash Exposure (FE) Lock
- Built-in transmitter and receiver offering fully wireless automatic flash with up to three groups of multiple Speedlites that can be controlled from the 580EX II or optional Wireless Transmitter ST-E2
- Manual flash output between 1/1 to 1/128 in 1/3 stop increments
- Stroboscopic flash output between ¼ to 1/128 with frequency range of 1 to 199Hz
- 14 Custom Functions with 32 settings permitting customisation of operation to personal preferences
- Dust and water resistant system - Exterior seams and joints, window edges, moving parts and the control panel are sealed against dust and water
- Silent recycling oscillation frequency is beyond the hearing ability of humans
- External metering system work with the flash reflecting off the subject measured by the external metering system
Advanced Design
- Autozoom head covering a range of 24-105mm or as wide as 14mm with built-in wide panel engaged
- Built-in AF-assist beam compatible with EOS multi-point AF systems including 45-point Area AF types
- Fully swivelling head with stops at 60, 75, 90, 120, 150 and 180 degrees
- Flexible bounce head with stops at 7 (down), 45, 60, 75 and 90 degrees
- Built-in catchlight reflector allowing a catchlight to be added quickly and conveniently to portraits
- Improved reliability with direct contacts with the new metal quick lock and quick release mounting foot, improves connection and communication reliability
