Nikon and Canon, the two powerhouses in the SLR market, were the latest arrivals in the mirrorless market. The Nikon 1 series got a new model at Photokina, the J2
. It's a modest update that adds some new features to 2011's J1. With an adapter, the camera can accommodate Nikon SLR lenses, as shown here, but it's far from compact in that circumstance.