I'm going to discuss speculative topics in this post. The purpose is not to speculate, but rather to ponder the technical and marketing challenges that Canon engineers will have to address as they design new high-end DSLR models. If Canon decides to produce a still camera with higher resolution than the 22 MP 5D Mark III, it's interesting to ponder what their video options might be. Would the camera shoot 4k video? If so, it would almost certainly cannibalize the market for the expensive 1Dc Cinema Camera. Would the camera shoot raw video like the Black Magic video cameras (except with a much larger sensor than the tiny ones that Black Magic uses)? This camera would be extremely appealing to the film and television industry, but again, it would probably hurt sales of the 1Dc. Or would Canon fit the camera with the same compressed 2k video formats that are available in their cheap Rebel models? That would seem like a let down for a camera with (potentially) state of the art still resolution. Of course, the big question in still photography is whether Canon can develop a sensor with enough dynamic range to match the best Sony-manufactured sensors. Each of these choices represents significant design challenges. It will be interesting to see what type of body they decide to release next.