Canon EOS 6D is a model in a relatively new market segment: affordable full-frame DSLR. It is by no way what one might call cheap camera, but compared to previous full-frame models it is significantly more affordable. There is only one direct competitor, the Nikon D600. They have quite a few differences between themselves, but more on that later. Overall, Canon 6D has the looks and feel similar to 60D model. In other words, it is smaller and lighter than 5D models (finally!) but shares many features like the menu system or the lack of pop-up flash.