Hello, can you please help me with clarification of the NEX-3N lens size specification. Currently I use original 40.5mm wide lens (or this relates to filter size?), can I use 49mm or 52mm lenses on NEX-3N? Where can I find info about NEX 3N lens sizes, compatibility and is it required to use ring adapter? My assumption is that picture quality will be better if lens filter size is larger...? Would it make sense if I invest in "Mount Adapter Ring For Tamron Screw Lens to Sony NEX Camera NEX-3" on e-bay to connect my Tamron 18 - 200 lens? Thank you very much for your advice's .