Check out this very interesting video discussion from the guys over at Luminous Landscape: http://www.luminous-landscape.com/essays/cameras/the_mirrorless_revolution.shtml They draw comparisons to what happened w. Kodak vs Canon at the point where affordable digital SLR's arrived. Kodak refused to give up on their film "baby", so Canon just ate it for them. Now Canon & Nikon face the same dilemma...to realize DSLR's are going the way of the Dodo, and they have not got a stick in the fire of Mirrorless system cameras. They've let Sony, Fuji, Pana, Olympus start a revolution. Who will finish it?