I went to the Portland Rugby Football Club game against Springfield today. It was raining all morning, but I tried using and umbrella and a rain coat to protect my camera and lens. I used a Canon 300mm f/4 with image stabilization and a 1.4 teleconverter. I also shot without the teleconverter.
The 300mm was a great lens, and on this raining day I needed the image stabilization. I was using ISO 800 already. Anything higher and the quality would have been really bad. As it was, you can still see a little but of the rain coming down and it’s not too noisy in the reduced images.
I stayed until they changed sides; the rain was picking up. You can see more in the MaineToday.com Seen Portland Rugby vs Springfield photo album.