ISO

1. Shooting at a higher ISO at a sporting event like a basketball game or a night football game can be beneficial because it helps freeze motion when there isn't enough light. A high ISO reduces the amount of light needed which allows for a higher shutter speed.
2. The author suggests using a low ISO whenever there is enough light because it results in the best quality.
3. The author suggests using a high ISO when there isn't enough light or to freeze motion.

ISO 200

ISO 6400