I'm a teacher at a junior high school and recently agreed to help out with the yearbook by taking pictures at cross country meets. I currently have a a6000 and have been using the kit lens that came with my wife's NEX-3n since I bought the body only for the a6000. I'd like to get a new lens but am not sure what would be best for taking photos at meets. I'd like to spend $250 or less if possible. I've been looking at the Wirecutter guide to e-mount lenses and both the budget sigma prime and the Sony portrait lens they recommend look good. I'm pretty new to photography though so am not really sure what about a lens makes it good for sports/action photography. All I know is that when I was using my wife's lens at last weeks meet I pretty much kept it all the way zoomed in the entire time. I can get right up on the sidelines so don't need a huge zoom but also like to keep the photos tight in on the runner I'm focusing on. Would really appreciate any advice.