Good Ergonomics&Handling With lots of external control and a good ergonomics, Fujifilm S1 Pro's body is very good for sports photography.
Optical Built-in Viewfinder During a sports shoot, using a viewfinder allows the photographer to stabilize the camera and reduce the camera shake since it is closer to the body. Besides, it comes handy where LCD screens are very hard to read under bright sunlight.
Average Max shutter speed: 1/2000s Fujifilm S1 Pro's max shutter speed of 1/2000s is not the best in class but it will be enough to freeze the moment. A potential problem may be when you use a fast aperture at very strong light, your camera may overexpose because of slow max shutter speed
Slow Continuous Shooting: 2.0fps In the world of sports photography, faster is always better.
Environmental Sealings Most outdoor sports games are held in all-weather, so your camera has to be ready for difficult conditions such as rain and snow. Exposure to dust and water splashes are also very common in sports.
Focus Points In sports photography , you keep continuous autofocus (AFC) mode on for tracking the subject and more focus means better tracking.
No Image Stabilization Due to the lack of sensor based Image stabilization, Fujifilm S1 Pro users have to rely on lenses with optical IS in order to maximize the sharpness of their sports photography photos. Currently there are native Nikon F mount lenses with Image Stabilization for Fujifilm S1 Pro.