Ok PROBLEM, this is gonna be my first season shooting Softball with pro equipment. I used to use my XTI with 75-300mm kit lens to shoot through the chain-link fence of a softball backstop. I sold my kit lens to a softball mom for a few bucks that also had an XTI with only the 18-55. Now that the season is back around I was at practice and realized all my good glass is freakin' HUGE! My cheapy 75-300 would nestle itself between the chain-links and I would get awesome shots without the chain being a factor. Now my glass is just too big at 72mm and 77mm front filter sizes. I realize if I wanna keep getting the shots parents pay $$$ for I need to get me some glass with a filter size in the 50mm's like this one below at 58mm front filter. However at $550.00 the price seems steep as it would only serve the purpose of the back stop shots I am used to getting. I thought I was done buying glass for a while. Anyone wanna recommend another option that is in the 70-300 range with a small front filter size and is good glass? Do I just buy my 75-300 kit lens back and dare strap it on a 5d MKII just for those shots?