Hey Guys, I have been reading alot, and still can't find an answer.
I currently have a Sigma 70-300 f/4-5.6 "Macro" lens. I have had this lens since I got my Rebel 2000 10 years ago. I have the opportunity to upgrade to the Canon 70-300 IS (non-L) for a decent price ($450) and wanted to know if this was worthwhile or if I should save up for something else. I use this lens for a lot of things, but it is really anytime I know the range will work, and I might need more than 135mm.
Will I see a noticeable improvement, or is it not worth this step. I am not likely to be able to afford any of the L telephoto lenses anytime soon (this would be a 2-4 year purchase at least).
I have T2i, and shoot some nature/wildlife, some sports, and anything else that comes my way.