Photo taken during Halloween 2006. I was carrying around my big EF 28-300 f3.5-5.6L lens that I had used at my son's soccer game earlier in the day, I had just taken a bunch of natural light indoor photos and had my ISO set to 3200.
I set out to capture the motion of the light-saber, so I set the camera to shutter priority at 0.5 sec. Unfortunately, I forgot to reset the ISO back to a lower range - I should have used an ISO between 100 to 400 ISO as the only light I was interested in capturing came from the very bright light-saber. Nonetheless I quite liked the results on the image below.