Canon 580EX II Master Setting Mystery Solved

canon - Why do I get horizontal grey bar with flash at shutter speeds slower than max sync speed? - Photography Stack Exchange

Canon Speedlite Transmitter A : Camera Flash Accessories : Electronics

How to Set up your Canon 580EX II at the Master Mode setting « Photography :: WonderHowTo

Technical detail of Canon 580EX II Mark 2 flashgun - microglobe uk

Canon ST-E2 vs Canon 580EX as Master Flash Trigger : Martin Pot - Photography Blog

Gold Coast Camera Hire

Canon Knowledge Base - QuickGuide to Canon Speedlite 580EX II Modes and Functions

Solved: How can I make my 580 EX II work more like a Vivit - Canon Community

Canon 580ex II vs Yongnuo YN-560 II - DSLRnerd.com

Canon Speedlite 580EX-II Hotshoe DIY Fix

Canon Speedlite 580EX II flash review @