Nikon introduced the 1 System today, choosing to go with a 1-inch (2.7X crop) sensor. Of the big players, that leaves only Canon out of the CSC market. So far, only Sony and Samsung are using APS-C sensors. I can see the reasons for going with the smaller sensors (smaller lenses), but Sony is probably feeling pretty good about this new Nikon system. It will be interesting to see what Canon brings to the table!