In observance of Memorial Day, all orders placed after 3pm EST on Thursday May 23, 2013 will ship on Tuesday, May 28, 2013
Despite the large maximum aperture, the lens remains compact. Lens group 5 moves for rear focusing, and sharp, crisp pictures are obtained at all apertures. The background blur is ideal for portraits. The USM autofocuses the lens quickly and quietly.
Similar to a standard portrait lens like the 85mm f/1.8, Canon's 100mm f/2 is also an exceptionally bright and short telephoto lens appropriate for both general photography and portraits. Some portrait photographers feel that 85mm doesn't give you quite enough of what you need in a portrait lens and they prefer the 100mm focal length as it provides just a bit more compression. Again, as with the 85mm, the wide f/2 aperture setting allows for a paper thin depth of field,,,,, a good thing when shooting portraits.