Canon Speedlite 580EX II Electronic Flash Unit

The new flagship Speedlite 580EX II Flash, with maximum Guide No. 58 (meter; ISO100; 105mm), supports E-TTL II/E-TTL/TTL autoflash and features 20% shorter recycle time than previous generation and silent recycling. A host of improvements are introduced, including a metal hot shoe with an improved locking mechanism for added durability, an external metering sensor for non-TTL automatic flash exposure control and a PC Terminal for use with non-dedicated slave triggers. Fully compatible with all EOS SLRs, the new Speedlite 580EX II is gasketed for dust and moisture resistance, making it possible for users to use flash safely when shooting in dusty or wet environments with EOS-1Ds Mark III/EOS-1D Mark III.