Vitruvius: Dear sdyue; why are you spamming this thread with claims that there is no other camera on earth that can come close to the 1D X FPS ??? Do you work for Canon? The 1D X is 18 MP and shoots 12 FPS with AF. The Sony SLT A77 is 24 MP and shoots 12 FPS with AF. And the Canon is more than 4 times the price. I know Canon is full frame and a better camera but stop acting like they invented the wheel. The Sony even shoots 1080 video at double the FPS than the 1D X. Casio Exilim EX-F1 shoots 6 MP at 60 FPS which is similar data band width as 18 MP at 20 FPS and that was 4 years ago and cost 1/7 the price. What is your point??? Have you eaten too many 'time slices"?!?!
To know what makes the price diff, consider this:
A77 has some mediocre buffer, it can't continue to take 12 FPS while Canon 1D / Nikon D4 can keep going on and on.
A77 is a good camera, but it's classed differently, even Sony knows that. The closer comparison should've been Nikon D7000 or Canon 7D (and even them have higher continuous RAW buffer and 100% pentaprism viewfinder)...