Quote Originally Posted by Daniel Browning
I used to think that the reason Canon kept the 1.3X format around is because the larger full-frame mirrors couldn't hit sufficient frame rates (10 FPS) at economical prices. But Nikon disproved this with the D3.

Maybe Canon disproved that much, much earlier - in 2000 with the EOS-1v, which shot full frame (film) at 10 fps, and had a price lower than a 1D body (even after adjusting for inflation). Of course, 36 exposures don't last very long at 10 fps (not to mention the fact that CMOS sensors cost just a bit more than film).