What goes around: 6 mid-sized ball heads put to the test

One of the most important parts of a tripod is the head that connects the camera to the legs. Continuing where our previous ball head roundup left off, we've collected six ball-type heads for review that are in the medium-to-large size class. These heads are suitable for most large cameras and lenses, with only the truly gigantic or heavy devices requiring something larger. Find out which ones earn our recommendation. Read more