The latest in a line of storied lenses going back to the 28–80mm f/2.8–4L of April 1989, this is Canon’s fourth high-speed, full-frame, standard-range, L-series autofocus zoom. The previous 24–70mm f/2.8L was introduced in November 2002, and compared with that lens, this version II ($2,299, street) has better weather-sealing, AF processing, and a more rugged build. Its major upgrade, however, is the addition of more high-end glass. The previous 24–70mm had two aspheric elements and one of ultra-low dispersion (UD) glass. This one offers three aspherics, two elements of UD glass, and one of Super UD glass.