My stepson has his high school football games more toward the dusk/night time. I'm looking for a lens that will allow me to shoot the high school game and have considered the Sigma 60mm f2.8, because honestly, my current line up of the O25 f1.8, O40-150 f4-5.6 and kit lens aren't helping me out a lot. I do mostly street photography in my off time and don't have a whole lot of money to throw around, so this makes the Sigma look even more tempting. Any recommendations on this lens for the purpose I've given? Any examples of how it performs in stadium lighting scenarios? Thanks in advance.