I am still new to this forum and photography in general so if this is a repost i am sorry. I have a Rebel XSi and i can take great shots (atleast in my opinion) during the day or decently lit areas. I always have trouble in low light though. Last evening (sun setting) i tried taking shots with my camera and my new 28-135mm lens of cars at a car show and every pic came out fuzzy like the focus was just off. Also the pics looked grainy (could be the long exposure i had). Kinda ticks me of because the other day i was taking pics with the same setup and they looked great. I just need to be educated on taking still shots and sports photography in low light.