A good friend of mine let me borrow his Sigma 50-500mm f/4.0 lens. I thought I'd give it a try at one of my granddaughters softball games. I must say that having the ability to zoom from 50 to 500mm gives you quite a bit a versatility. About the only draw back besides the f/4.0 is the weight. This bad boy weighs in at 7 pounds. Here's the best shot I got at the game, taken from behind the fence in Center Field.