Does anyone know if there is an optimum distance to be behind a net or fence when shooting through it? Sometimes I have no choice other than to shoot from behind the net, or even worse a chain link fence painted dark green, at a baseball game. Under such circumstances I always focus manually; however, how far behind the net/fence should my lens be -- almost touching it, back a foot or so or is it best to be back a few feet? I shoot with a 200 or 300mm lens @ 2.8 to 5.6 and the subject is between 60 and 120 feet from me.

