I bought some last week for just this purpose after it turned out my Photix triggers were not up to job with regards to range and reliability (I was struggling to get 10m), to fire the remote camera you will need an extra lead but I'm not sure which one you will need for a McCanon. I will be using them in anger this weekend at Badminton Horse Trials (weather permitting) and I am confident they will do what is required of them.
Hope this helps.