I had a J1 camera previously, and currently using a V1. With its 2.7x crop factor, it surely meet my requirement for a lightweight combo. There are several Nikon1 owners who shared their opinions and experiences online, so I thought I could also provide some results that I managed from my lens which include Nikon 70-200mm f2.8 VR1, Tamron 180mm f3.5, Nikon 300mm f4 and Sigma 500mm f4.5. Of course, I need the FT1 adapter to attach these lens to the Nikon1. :)