The EF-S 18-135mm f/3.5-5.6 IS USM Lens is attractive on many fronts, including its wide (7.5x) focal length range, its relatively small size and light weight, its fast, smooth and accurate autofocusing, its great functionality including image stabilization.
The Canon EF 100-400mm f/4.5-5.6L IS II USM Lens offers professional grade build quality, fast, accurate and quiet AF, very effective image stabilization and very impressive wide open image quality over the entire and very useful 100-400mm telephoto focal length range.
The Canon EF 70-200mm f/2.8L IS II USM Lens delivers impressive image quality, focuses accurately very fast and has top-of-the-line build quality, 4-stop Image Stabilization, weather sealing and a very useful focal length range. This is now my favorite and one of my most-used lenses.
A highly practical medium telephoto lens with superb delineation and portability. Images are sharp and clear at all apertures. Through computer simulations, the lens has been designed to give beautiful background blur.
The most important feature of the EF 100mm f/2.8L IS USM is that it offers a full 1:1 macro reproduction and a minimum close-focus distance of just 30cm. ... The Canon EF 100mm f/2.8L IS USM Macro is a well-built lens made with a metal mount, a high-quality plastic barrel, and a rubber-coated focus ring.
The Canon 2752B002 EF-S 18-200mm f/3.5-5.6 IS Telephoto Zoom Lens is compact, lightweight and has a wide magnification range. It features a wide focal length range from normal to telephoto equivalent to 29-320mm in the 35mm format.