The 645Z looks VERY tempting indeed. What I really need is the replacement screen AB -82 split image. Of the nine lenses I own, 7 are manual focus (I prefer them), and a split image would make manual focusing much easier. I have tried everywhere, including an order I placed from Hong Kong. Their web site said they had one, and I ordered it. Turns out they didn't, and I was refunded. I have no clue why Ricoh does not re-issue that screen. Possibly they do not want to encourage us to buy old MF lenses, but want to sell us AF lenses?
Dave in NJ