Canon 580EX mkI problem

Started Mar 23, 2010 | Discussions thread
ScratchDisk Veteran Member • Posts: 3,498
Re: Canon 580EX mkI problem

Hi, I gues you have already checked that the FEC set on the flash unit itself is set to zero? How are the recycle times. When set to manual 1;1 and zoomed to 105mm does its output come very close to its 58 (in m) rating? Those items might give a clue to the health of the unit generally.

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