Canon 550EX in manual mode can't trigger an optical slave?

Started Mar 7, 2013 | Discussions thread
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SeedyBee Regular Member • Posts: 150
Re: Canon 550EX in manual mode can't trigger an optical slave?

Canon Speedlites do not play nicely with optical triggers.

Try it with the Master/Slave switch set to Off. The command pre-flashes "may" not be issued. I can't remember.

Otherwise, has your Metz got an S2 Mode, which ignores the first flash. It does not always work as the Canon can issue many bursts of light pulse code, before the Fire! command.

There are a few designed-for-Canon optical triggers which handle the preflashes better, and could replace the internal Metz detector if that flash has a PC-sync connector.
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Clive

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