I'm looking to purchase a decent telephoto lens to use for a while with my XSi before upgrading to the L lenses. I'm trying to decide between the Canon 55-250mm IS and the 70-300mm IS USM. The former is about $260 and the latter is about $480. I've seen the pictures that were taken by both lenses and they all looked nice with the 70-300mm lens being a bit sharper.
I'm just wondering if the 70-300mm lens is worth the extra $220 (almost essentially doubling the price of the 55-250mm). The 55-250 would be the cheaper way to go but I don't mind spending more for a better lens (if that's the case here). Any advice is appreciated!
