Hi, I'm still looking to eventually replace my Nikon D5000 with something smaller & lighter. One thing that would seal the deal for me is an ultra wide-angle lens, either built-in (unlikely) or as part of an ILC system. What are my options? I had a play with a Sony NEX7 with a to-me-unknown lens combination: a small lens (not quite pancake) and a wide-angle adaptor; I believe both were made by Sony. However I'm not sure if the combination would even be in the UWA category. The only other option I'm currently aware of are the m43 lenses by Panasonic and Olympus. In addition, I would really like a viewfinder -- something the NEX7 had, but I believe the NEX7 is no longer being made? My budget doesn't extend to an Olympus OM-D E-M1 -- nor would I want something that "large". What should I be looking at and trying? Or should I keep my camera -- which I'm very happy with -- and buy a nice Nikon DX 10-24 lens?