The Canon 24-70 f/2.8L II is the update to the extremely popular Canon 24-70mm f/2.8L. Key features include:

Improved optics
Lighter, more compact design
Great in low light
Excellent value
Versatile Standard Zoom. The Canon 24-70mm f/2.8L II is the Cadillac of standard zooms, and the replacement to the original Canon 24-70mm f/2.8L. Many photographers will attach this lens and almost never change it.

Revised Optics and Build. Its redesigned optics produce images that are sharp throughout the zoom range, with chromatic and spherical aberrations kept at a minimum. It’s smaller in size and weight than its predecessor, has improved weather sealing, and features smudge- and fingerprint-resistant Fluorine coating on both front- and rear-exposed elements.

Fast Aperture. The Canon 24-70mm f/2.8L II’s fast f/2.8 aperture allows for low-light event shooting and a shallow depth-of-field required for portraiture.