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.
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.
Blending a flexible zoom range with a versatile feature-set, the EF 24-70mm f/4L IS USM is a Canon L-series lens covering wide-angle to short telephoto focal lengths and featuring a constant f/4 maximum aperture.
Despite the appearance of a rather basic lens with a very affordable price tag, the Canon 10-18mm lens is an extremely sharp lens -- even wide-open and at its widest focal length. At 10mm, the lens displays very sharp centers with only a hint of corner softness.