I have never understood why the 80mm f3.7 was introduced. I have a few theories - import controls, shortage of shutters, or just trying to make the basic camera cheaper - but nothing concrete. Apart from some quirks with the Copal shutter, it should do what you need. I have heard nothing against it optically. I don't have the lens design to hand, but I would expect something like a tessar formula. A bit soft at full bore, but improving quickly to f8. I'd be curious as to the weight of the unit. The Seiko shuttered 80 f2.8 comes in around 310g. If this is significantly lighter it should make for a very portable basic camera on a C220. Maybe they were going after YashicaMats?