Sony A7 and A7r: Mirrorless Cameras Have (Finally!) Gone Full-Frame

Mirrorless interchangeable-lens cameras have come a long way in only a few years. And after gradually layering on new features and capability, they've finally reached an apex in Sony's new A7 and A7r models, both of which sport that big and beautiful bastion of image quality—the full-frame sensor. » 10/16/13 2:00am 10/16/13 2:00am