What would an 'entry level' full frame Canon look like? Realistically, there's only two choices of sensor -the 5D MkIII's 22MP and the 1D X's 18MP; not much of a product differentiation. I can't see them using the 18MP sensor, as I think this would devalue the 1D X psychologically by implying that it uses Canon's 'budget' FF sensor. So how else to differentiate from the 5D MkIII: less weather sealing, <100% viewfinder, slower frame rate, smaller image buffer? They're all a given (I would think), but Sony's experience with the A900/A850 would suggest that this isn't enough -a major product feature would have to be omitted. I'm guessing that would have to be the fancy AF system, which would leave the camera as little more than the 5D MkII with a slightly improved sensor. Unless Canon can knock them out at a very low price point, which might disrupt their APS-C line-up (refer also to my first point about the A900/A850 margins).