I have little exposure problems with my N1 ( 24-85 ),spot and matrix are very accurate,but when i use centre weighted mode it seems to be much more sensible to highlights rather than low lights.I use slide film like velvia and provia,and had no problem with my Contax 167 or RX,but with N1 in centre weighted mode slides are little underexposed.I compared exposures mode of N1 with a Sekonik and there are no differences.I ask: its possible that introducing matrix mode in N1 Contax had changed the way of reading light of centre weighted mode?(I repeat with 167 and RX I have no problem of underexposure in centre weighted mode).