I have narrowed down my choice for my next lens and I want to get the 70-200mm f2/8. My question is do you think it is worth the extra money to get the IS version? Im thinking of not and using the money on the 100mm lens which would then give me four lenses for my XSi. Im looking to shoot mostly family and kids, including sports such as cheerleading, competivie cheer (inside), swimming and baseball.


Im new to digital SLR so here is what my lenses would be;


kit lens - 18-55mm


50mm lens from my old canon film camera


new - 100mm & 70-200mm f2/8


or 70-200mm f2.8 IS


Your thoughts? Sorry to post similar questions but I value all of your opinions.