Canon Speedlite 580EX Flash for Canon EOS SLR Digital Cameras - Older Version
Combining the strengths of its predecessor 550EX while providing additional functions at higher speeds, the SPEEDLITE 580EX is Canon s new flagship flash unit featuring a higher maximum guide number, shorter recycle time, autozoom control for image sensor size, and design improvements for easier handling by digital SLR users ranging from professional to advanced amateur.