Snegron, I have the left hand grip for my RB and once you get used to it you will find the focus really easy with the right hand, which will be in that neighborhood anyway to balance the camera. They are available on the bay on a regular basis. Get the genuine Mamiya with the shutter release and you wont be sorry. They regularly go for anywhere between $25-50. I gave $24.95 plus shipping shipping on a buyitnow. Unless you are really loaded or need something that does not appear regular or is too high (such as caps etcetera) do a Mamiya RB67 search every day. I have put together an astonishing kit for well under a grand.