In my last article on photography composition, I discussed ways to use three primary subjects to create powerful compositions. And although I have a bit of a soft spot in my heart for three, two subjects can be just as compelling, if you know how to do it right. Compositions with two subjects give you opportunities to capture interesting behavioral interactions when working with animals or people, and lend themselves to simple yet bold designs no matter what type of subject you are working with. Simply put, there are certain things you can’t do with just one—and furthermore, sometimes three’s a crowd!.....