Watching tennis on TV we often see shots of photographers lining the pit by the court. Presumably these are press of course but I'm interested in exactly what they do, their equipment and their techniques. Are they just after news-worthy shots? Artistic? Why so many photographers yet so few published pictures (apparently)? And what are their techniques for capturing those shots? ISO and exposure settings? How do they setup their focuss tracking etc? What gear do they use? There must be an article in there somewhere?