Sony's NEX-3 and NEX-5 cameras certainly boast the features to get any camera nerd excited -- interchangeable lenses in a form factor smaller than Micro Four Thirds but with an image sensor 50% bigger -- but the big question remaining is how they'll actually hold up in use. Unfortunately, according to Digital Photography Review at least, the cameras seem to be a bit of a mixed bag. While the site says that they are unquestionably a "brave and interesting attempt to redefine the camera," it says that they also represent a "distinctly unsteady first step." The biggest p
