Obviously this is quite an old camera at this point. It's APS-C and Sony still makes cameras in that form factor, I think maybe the 6600 may be the latest? What would Sony's latest APS-C buy me as far as improvements from the NEX-7? Also I have a lot of adapter rings for various lenses including the old Sony/Minolta SLR lenses. Would I need to replace any of these? If I upgraded to Sony's full frame cameras, would I have to replace the adapter rings (maybe especially the Sony/Minolta SLR one)? One more issue, does anyone have any recommendation for a small "pancake like" normal lens for the APS-C (presumably this would be a 30mm or 35mm) which is high quality and light weight? In case I need something really small and light. Thanks!