This is a reference page for the Canon Speedlite 580EX which has been a valuable assistant in filling-in and background lighting my setups for quite many years now.
The flash was released in August 2004 replacing the 550EX in order to complement the top then EOS cameras, the EOS 1D MkII and EOS 20D covering fully the 45 AF points of the former and auto conversion of flash coverage between FF, HPS-C and APS-C sensors.
