Last year Canon introduced its first full frame mirrorless camera body. Canon was no stranger to mirrorless, in fact other than Sony they had more mirrorless bodies in production than any other brand. But unlike Sony, Canon waited a long time to go big on the sensor. This gave Sony a huge edge having a five year head start on Canon in the full frame mirrorless space. Sony was further enabled by virtue of their semi-exclusive deal with Carl Zeiss for high end glass to rival Nikon and Canon’s best. When both Canon and Nikon entered the full frame arena, they were five years behind on glass, or were they?