I was fantasizing about the 1D Mk IV in front of a friend of mine (who also owns a bunch of Canon gear), and he asked why anyone would buy a Mk IV instead of just getting a 7D instead. Weather-sealing aside (not an important consideration for either of us), he claimed the differences between them are so insignificant that anyone (like me!) would be crazy to spend the extra money for the Mk IV. I've read all the specs on the Mk IV but not on the 7D, and I'm wondering if anyone has done a side-by-side comparison that I could use to win my argument (that the differences are significant enough to warrant the additional expense). If this is old news and I missed it, apologies in advance. I've seen other body comparisons but don't remember seeing this one.





