« on: June 11, 2012, 11:35:53 PM »
As others have said, you can't really compare the two. If you are shooting once in a lifetime moments (weddings, newborns, etc.) then having the backup of dual memory cards makes it worth the money. Are you going to shoot in potentially wet situations? The Rebel may not hold up. Do you need spot on AF in almost every area of the view finder, or will 9 points meet your needs? Do you need lens microadjustments, or are you fine with a lens being slightly off? There are a billion questions you need to ask yourself. Maybe sit down and put dollar amounts to them.
Would it be cool to have a 1DX? Yes. Do I need to shoot 12 fps? No, at least not yet. Same types of questions for completely different classes of cameras.
If you need full frame, then go with the 5DIII. If not, and you don't need a camera right away, maybe holding out for the 70D is a better option. But again, you have to ask yourself all the same questions.
I didn't have to justify the need for a 5DIII, nor did I have to justify the need for two of them. The work we do requires it, and it has paid off.