correction to above post: it's Canon Legria, not Legia. Sorry.
I'm looking at buying a Canon Legia HF S21, but can't find a dedicated underwater housing for it. There IS however, a dedicated underwater housing (Equinox HD6) for the Vixia HF S21. From what I've gathered in my research, these cameras are the same thing, except that Legia is PAL and Vixia is NTSC. Does anybody know if there is a physical difference between the two - eg. buttons in different places, or any other change that would render a Legia incompatible with a Vixia housing?
Also, how interchangable are the other accessories? Would batteries and additional lenses for the Vixia fit the Legia? They're a lot cheaper in the States than here in Australia, especially with the dollar so strong.
Any help I can get would be much appreciated; I live on a remote island and can't just go into a camera store to ask these questions!

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