Originally Posted by Brendan7
Canon NEEDS a FF 1D body. Right now, there is no perfect wildlife
body - the 5D2 has great IQ but is too slow, the 7D doesn't have the
fastest frame rates, 1D durability, or superb high-ISO performance, the
1Ds is slow and expensive, and the 1D4 is APS-H which IMO is a very
awkward format. It doesn't increase your EFL much, and hurts wide-angle
performance. But if the 1D4 will put you at odds with the wife, then the
7D is the body to get. And if you can add a 5D2 on, even better.