>I attend my daughters' artistic gymnastics meets. The >gymnasts' movements are very fast - but almost always >predictable even on the floor. The gyms are usually poorly >lit, so I mostly shoot with my 85 mm f/1.8 and 135 mm f/2.0 >primes wide open. ISO 1600 and 1/800s are usual settings for >me.
Which mode do you use? Shoot at shutter priority. Adjust the shutter to freeze action, increase the f stop for DOF and set ISO to auto. Don't limit your ISO to 1600.