im purchasing a 7d next week and i will mainly be using it for downhill mountain biking photography and videography, im getting the 70-200 f4 IS and the 24-105 IS both USM ill also be buying a flycam nano and a rhino slider carbon (they're amazing) oh and a tripod of course...does anyone have any experience shooting any type of mountain bike or fast paced action with this body and lens set up?

