• 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

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 25% 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