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Why do you blow up so much 580EX II?
There has been a lot of people writing in over the years about their 580EX II’s constantly failing. People became more vocal around the time the PocketWizard FlexTT5 and MiniTT1 launched. Below is preliminary research done by PocketWizard on the 580EX II and the problems it has.
Since the launch of its PocketWizard MiniTT1 and FlexTT5 models in early 2009, LPA Design (A.K.A.PocketWizard) has been receiving periodic calls and reports from customers who are using their Canon 580EX II flashes with the PocketWizard ControlTL radios and expressing concern that perhaps their flash may have been damaged by using a PocketWizard radio trigger with it. As of the time of this report (Jan, 2011), there are about 120‐140 PocketWizard customers who have reported having one or more 580EX II flashes damaged with common symptoms over the past 18+ months.
Read the full PDF (Very technical)