I have the 1D IV, the AF system is a huge jump from the 7D. That is the major thing you will notice.The 1D IV IQ is going to be better straight out of the camera. The 7D's can be improved to what you get out of the 1D IV but it takes some work in post and looks a little flatter IMO.If you want the top quality and you don't mind spending the extra $$$ it is worth it. I say that assuming you have the good glass to go with it. If you plan on putting a 100-400mm on the 1D IV all I can say is get the glass first.


What is a "pro animal shoot"? Most animal's I photograph are armatures.