The Sleeping Giant's Sea Lion

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The Canon 550D is a popular DSLR camera released in 2010 as part of Canon's entry-level "Digital Rebel" series. Also known as the T2i.

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Can I use a high-voltage flash with the Cactus v5 trigger that is mounted on the camera?

Can I use a high voltage flash (with a trigger voltage over 5V) on the Cactus v5 transceiver that is mounted on the hot-shoe of my Canon 550D? I know that I can mount the trigger on the camera and ...