EOS 5D Mark III vs. EOS 1D X - Differences?

[Kayaker72]

Get the 1DX....you know you want it And selfishly, I hope either Rick or you get one so you can tell us about it.....

Ok, first, thanks for the comparison. Very interesting and, as usual, you have a great nack for highlighting the important details. Honestly, given the released specs and without independent reviews, I view the 1DX as something that will be bought by those that crave the absolute best or actually have a specific need one of the features (most likely fps, weather sealing, the difference in the spot metering feature, or, as Rick mentions, the "deeper" features). It seems to me that 5DIII will be the bigger seller and most commonly used by advanced amateurs and professionals alike.

But I am not sure that helps you at all. If I were in your shoes it would get down to may plan for my next purchase AFTER the 5DIII/1DX. How quickly will you also be able to pick up the 24-70 f/2.8 II? If I could buy the 1DX now and pick up the 24-70 f/2.8 by the end of the year, that is probably what I would do for the simple reason that if you can afford the best, buy it, plus I would want to see the reviews of the 24-70 II before buying it. I can also see you going with the 1DX for the weather sealing (as you mentioned last night), the ergonomics of a full size body, and the chance to investigate 19 C.Fns. But, if everything checks out, it is hard to imagine being dissappointed with picking up the 5DIII + 24-70 f/2.8 II. I know you have also discussed the 500 mm f/4, so planning that purchase may come into play, but you seem to be more focused on family photos, so the 24-70 II makes sense.

Of course, if it was me...given what I shoot, I'd probably pick up the 500 mm f/4 now .....

EDIT: I also wondering about AF speed...how much faster will the dedicated Digic 4 processor make the AF?