ok so im looking to upgrade from my HP p&s to a rebel xsi. im pretty solid on getting that model of body. the only thing im shaky on is the lense. im tied up between these two: the Canon EF 70-200mm f/4.0L which is an L lense but does not have IS. or the Canon EF 70-300mm f/4-5.6 IS which is not an L lense but it does have IS. i want the sharpest images i can get. now im wondering how much sharper are the photos going to be with the 70-200mm and will it be worth it to sacrifice the IS. i will probably be doing 40% tripod shooting and 60% handheld shooting. any input is appreciated EDIT: sorry i just realized that this is in the wrong section. if a mod could please move this to the digital Q and A section please.