This winter I'm going to be shooting indoor basketball for a high school in Mansfield, OH. I have a 1D Mark IV that I've used extensively for outdoor well-lit sports (track mainly). To practice, I went to an open-gym just to get an idea on focal lengths and perspectives. The trouble I had was metering. There was a door open at one end of the gym letting massive amounts of outdoor light in, with a huge blown highlight area on the floor. Ok, I can work around that. However, I had trouble metering in the gym and got quite a few over and underexposed images. What is the best way to meter for these situations, such as indoor gyms? I haven't had any trouble outside because that's easier, and controlled portrait indoor light hasn't been a problem. But there are no flashes allowed and I was wondering if there is a more robust way to meter action indoors. I've never done this before. Thanks!