How reliable are adapters according to their specifications? I'm currently on back-order for a camera at the moment and I'm trying to be as productive as I can in the interim by researching and wish-listing glass I'd like to purchase. That said, I know Olympus and Panasonic have the lion's share of readily available m43 lenses - but what about if I'm looking to fetch up Nikkors or Canon lenses? Granted, all of I'm aiming for all things manual but since all of these will need adapters for an M43 body, I'm a little indecisive because of the reliability issues I've read about regarding adapters in general. Is there any sure-fire way to make sure that an adapter I order will even work properly on the BMCC before I have the camera in my hands or would it be best to just sit on it until I actually get a chance to tinker around with the thing? Thoughts? Suggestions?