The canon 580ex, the Premier Speedlite for Canon Photographers

The canon 580ex speedlite is 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). The 580ex speedlite II is also the best camera-top flashgun for any Canon EOS D-SLR.

Other features of the 580ex flash include improved communication reliability through its direct contacts, and recycling time is both 20% shorter than the 580EX and is completely inaudible.

Canon Speedlite 580EX II Key Features:

* Approx. 20% faster recycling time compared to 580EX
* Superior build quality, including a metal foot for higher rigidity
* Max. Guide No. 58 at 105mm setting (GN 190, feet)
* Auto conversion of flash coverage with compatible digital SLR cameras
* White Balance info communicated instantly to compatible digital SLR cameras
* Full swivel, 180° in either direction
* AF-assist beam, compatible with all AiAF points on every EOS SLR
* Dust- and water- resistance to match the EOS-1D Mark III
click here for the Canon Speedlite 580ex II flash manual