So I've had my T1i for about a year and love learning the nuances of it, although I have little to no idea what a lot of the terms/jargon truly translates to - it's still entertaining. I have recently purchased the 55-250mm lens to help with some of the racing photos as I'm not always permitted inside the track fence. Utilized during the day, GREAT shots and no issues -- then we moved to the night races and the difficulties. I typically utilize the T1i's sports setting and didn't have issues. At night, when I used that setting the shots were dark, grainy, and just plain horrible. I changed to the A-Dep setting and tinkering with several of the included setting options. Some shots, I didn't see to have issues and other's well it looks like a snow storm with the "orbs". True, these races are on dirt so a lot of the issue is the flying dust/dirt. Additionally, the lighting used is a combination of a halogen type utility light and overhead lights - I believe are considered tungsten lights (yellowish/orangish glow). I changed the lighting settings to utilize that feature and included a UV filter which helped with some of the issues as well. I know that I'm probably tossing to many variables in the mix at one time but I wanted to try to get a few good shots before the night ended. I'm thinking of renting a Speedlite 430 or 580 from my local store and didn't know if there were any opinions as to whether or not it would help. I did notice that the camera held as "busy" for longer periods of time so taking multiple action shots at once was nearly impossible. Thanks for any info/advise!