Canon Speedlite 580EX II review
Further development of Canon’s flagship Speedlite has led to the
production of the 580 EX II. This is the premier Speedlite for all
photographers, including professionals. Newly designed to match with the
EOS-1D Mark III in terms of improved dust- and water-resistance, body
strength, and the ability to control flash functions and settings from the
camera menu (EOS-1D Mark III only). Other features include improved
communication reliability through its direct contacts, and recycling time
is both 20% shorter than the 580EX and is completely inaudible.