It's both, actually. But that said, Nokia uses very good glass. It's only once you get up to P&Ss and DSLRs that the glass can really hold back the sensors --

It's both, actually. But that said, Nokia uses very good glass. It's only once you get up to P&Ss and DSLRs that the glass can really hold back the sensors -- phone sensors are always struggling to make a compromise between package size and image quality, and usually package size wins.