We had a carnival up at the high school in my town of Kennett Square and I went up to try and capture something of it in pictures. Let me know how I did as I've never photographed anything remotely like it, lol.
Everything was taken handheld -- even the long exposures -- with a little Olympus E-P3 and a variety of prime lenses. I was carrying the 14mm F/2.5, the 20mm F/1.7, and the 45mm F/1.7. (They are 28mm, 40mm, and 90mm equivalents respectively).
Some are a bit noisy and I used no noise reduction on the RAW file for most of them and they still seem to work.