Little update....picked up the Tamron 28-75 f2.8. I was able to try it out an a volleyball match over the w/e. Lens work fine, but I think I am running up against the abilities of my camera body(rebel t2i). I tried various settings, AV, TV and the Athletic mode. ISO 1600 and 3200, pics were in focus but very grainy. ISO 800 pics were not so grainy, but it was harder to stop the action with out blurring. We were in a old gym with crappy lighting. My FIL was along using his 60D, need to compare and see how his pics came out.