Let Canon recommend the product that best suits your needs
The EF 70-300mm f/4-5.6L IS USM Lens, a high performance, Lseries telephoto zoom lens, boasting an incredible feature set including an image stabilization effect equivalent to shooting at approx. 4 stops , full time manual focusing all built and designed around two UD elements and a floating mechanism attaining superior image quality across the entire focal length range.