I don't want to be one of those "I don't know the answer but I'll chime in anyway" people.... but in this case I will...
Even if some people give you reviews on that controller, I'd hold off on buying one until you can speak with someone who is using that exact controller preferably with your
exact camera as well... or at very minimum a similar model Canon camera.
Canons are notorious for
not being fully compatible with non-Canon after-market LANC devices... especially zoom controls. Or if you take the plunge and buy one, make sure it is from a dealer that will accept returns if the controller doesn't talk with your camera as it should.
T2
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Todd Terry
Creative Director
Fantastic Plastic Entertainment, Inc.
fantasticplastic.com