Originally Posted by ShutterbugJohan
Thanks for correcting me! It would make sense that the lens is chipped to give 'false' or no information on maximum aperture to the body (similar to the 'tape-the-pins' trick that can allow AF on too-slow Canon combinations like a teleconverter with a lens that's already f/5.6). That also makes Bryan's warning about current 3rd party lenses possibly not working with future Canon bodies very relevant, I would think.