I learned a LOT. I had to shoot at 1/250 sec (some of these are 1/500 as I was trying different shutter speeds) as 1/125 was just too slow to capture the action without blur. I also had to up the exposure in lightroom for the 1/500 shots too, and even do a tad of noise reduction. The thing I learned the most is that you CAN do decent action/sports photography with the 55-210. It was a great challenge, and a lot of fun to shoot and edit! :)