I recently bought a Nikon n55 and read in the specs that it will detect film speeds from 25 to 5000. The fastest I have been able to find is 1600, though I have not yet used it. What I am trying to do is use a fast shutter speed for a hockey game. The ice rink is not lit very well and the maximum shutter speed for the attached speedlight is 1/90. So how can I increase the shutter speed while still having the proper exposure? Thank you for any help.