http://photo-tips-online.com …-canon-580ex-ii/nutshell/
Here is a list of the main features and qualities Canon 580EX II has and 430EX does not:
•More power output (58 meter vs. 43 meters)
•Wireless master mode
•White reflector card (catchlight card)
•Weather sealing (battery compartment, shoe mount, body and head, connectors)
•Superior controls (select dial, newer buttons design, better on/off switch)
•External metering sensor
•External battery pack connector
•PC connector
•Head turns 180 degrees to the right (430EX II does only 90 degrees)
•Head tilts 7 degrees down (430EX II does not go down at all)
•Six extra custom functions
ALSO.....
Another interesting mode available on the Canon Speedlite 580EX II Flash is Multi Mode - or Stroboscopic flash. In this mode, the 580EX II fires a rapid series of flashes as setup in the menu. Unleash your creativity with this one.
And..... http://photonotes.org …sh2=canon580exii&flash3=*
AF focus assist cover 45points. (430EX II only covers 9)
Flash exposure bracketing (FEB)
Rapid-fire mode
"Save Energy" override control