Any kind of meter can be used successfully if you know how to use it. I use cameras with semi-spot metering (Canon F-1) spot metering (Nikon N90S), average metering (Pentax Spotmatic) and center weighted metering (Konica Autoreflex T3). They all work well if you point them toward a middle gray tone and go from there. I will use a hand held meter or a spare 35mm camera to meter when using meterless medium format cameras.