Hi All, evidently you didn't know the Sony pancake 16mm... Several of us we been using it here at Empuriabrava for shooting tandems for over 4 years and is perfect for the job. Of course is an autofocus lens... Its 24mm equivalent, I think is the minimum angle to use, specially alongside a GoPro. It matches our Sony's CX410/430 with boss perfectly. I don't like the kit lens because it retracts, but is usable if you're in a budget, which shouldn't be the case if you are getting pay for shooting tandem customers. There's a manual focus 12mm available in several brands. But I like the autofocus because you can get interesting close ups of the passenger with a blurred background. And of course the crown Sony 10-18, which is expensive but light and very good. Good times to be a cameraman!