- FP Mode, or high-speed sync, allows the camera to sync with flash at higher shutter speeds
- Second-curtain sync fires the flash at the end of the exposure, allowing streak of light to flow naturally behind the movement of the subject
- Wireless TTL flash when triggered by other on-camera 580EX; or when combined with ST-E2 Transmitter & multiple 580 or 550 EX’s
- Stroboscopic mode shows several minute flashes continuously to easily view flash effect
- 14 Custom Functions that provide maximum control over various flash functions
