Stopping action is all a mater of shutter speed. You can use a slower shutter speed if the action is approaching more direct on to your camera position. If the action is vertical to camera position the faster the speed the faster the shutter has to fire. So, a high asa or iso and a wider open f-stop to achieve the higher shutter speed (some cameras as high as 1/8000). Or, you could also use a flash (fire duration is around 1/5000) to help stop fast action, but then your are stuck at a flash sink of max on most cameras of 1/200 sec. with a 35mm type camera (film or digital). Now if your are using a medium format film or digital camera you can sink the shutter up to 1/500 sec. All 35mm type cameras film or digital react the same. The only difference with some is that they have a 1.X multiplier for the lenses, depending on the brand. I have a Canon 20D and it has a 1.6 multiplier and also a 5D and it is full frame, no multiplier. With the cameras that have the multiplier you need to remember that you need to multiply your lens mm by the multiplier to get the minimum shutter speed for a given focal length. Like this: lens of say 100mm with a multiplier of 1.6 would = a working lens of 160mm, this would result in a minimum of a 1/160 shutter speed to eliminate most all camera shake. This shutter speed might not stop the action though.