I've seen a lot of questions lately regarding using manual focus lenses on cameras that have AF. I've been trying to rationally come up with explanations as to why a person would want to do such a thing. I routinely photograph events (dancing, concerts, martial arts exhibitions) and couldn't possibly expect to get more than about 10 sharp pics per event if I were to switch off my AF. I can understand macro folk not using AF, but why not use it shooting sports, street and snapshots? Why force yourself to use MF? Why would a personal forgo a technology that makes taking sharp photographs easier? My thoughts/theories are as follows: 1) Autofocus follows the wrong subjects. 2) People have been using MF for several decades, why change now? 3) MF lenses are ever so much sharper than newer AF lenses. If any of y'all have any theories of your own I would be more than glad to hear them. I want to understand what makes MF-folk people tick.