Canon Speedlite 580EX II

• The Speedlite 580EX flash is compatible with Canon's E-TTL II (Evaluative Through The Lens) auto exposure technology. When combined with a compatible Canon camera and compatible lens, E-TTL II utilizes subject distance and other information that automatically modifies flash power, resulting in accurate flash exposure regardless of subject size, reflectance, or photographic composition.

Multiple Flash Exposure Modes

• E-TTL II
• E-TTL
• TTL
• Manual

Faster Recycling Time

• Improved power supply design provides up to 25% improvement in flash recycle time

Auto Focus

• Built-in AF-assist beam compatible with EOS multi-point AF systems including 45-point Area AF types

Catchlight

• Built-in catchlight reflector allows a catchlight to be added quickly and conveniently to portraits

Professional Modes

• Flash Exposure (FE) lock
• 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 a subject
• Stroboscopic mode shows several minute flashes continuously to easily view flash effect

Flash Exposure Bracketing (FEB) 

• 14 custom functions that provide maximum control over various flash operations
• Ratio flash lighting of up to 8:1 when used with ST-E2 Transmitter & multiple 550 or 580EX's
• When color temperature data is automatically transmitted from the 580EX II, the camera sets the color balance for optimal flash shots