As a confirmed Nikon dSLR user (currently D800, D800E and D7100), I wanted a smaller, lighter camera for short overseas "hand-baggage only" trips. I don't have the technical expertise or an optical laboratory to give an objective User Review but, after a couple of months of using it, I can certainly recommend the GX7 to anyone who, like me, wants a lighter, smaller alternative to their usual dSLR kit or, indeed, anyone who wants a smaller camera as their No.1 tool. What really impresses me is the electronic viewfinder. I don't think I will ever get used to holding a camera at arms-length and composing a photo on the rear screen (iPhone style), so having an EVF that almost matches the speed and efficiency of an optical viewfinder is a big bonus. In terms of image quality, you would have to get above the level of an A3 print before you would discern any difference between the GX7 and a Nikon dSLR.