Just Posted: Our Canon EOS 5D Mark III review. The 22.3MP 5D Mark III appears to offer similar specifications to 2008's 5D Mark II. However, sensor and processing developments, along with a host of user-interface revisions mean the Mark III is a much more capable camera. It also gains a greatly-improved autofocus system. So do these changes justify the considerably higher price tag? Read our full review to find out.