Not much information on this new lens except for what's on the Canon website. Note that the new lens now requires an 82mm filter. The older EF 16-35/2.8L used a 77mm filter.
The EF 16-35mm f/2.8L II USM is a high performance, water-resistant, and ultra wide-angle Canon L-series lens. It has been specifically designed for improved edge-to-edge image quality that will meet the strict requirements of professional and high-end amateur photographers. It features 3 high-precision aspherical lens elements, each of a different type: ground, replica and GMo for even better image quality than the original EF 16-35mm f/2.8L USM. The circular aperture produces a beautiful and natural background blur when shooting at wider apertures. Other features include internal focusing, a ring type USM (Ultra Sonic Monitor), and new AF algorithms for fast and quiet autofocusing.
[Note: GMo stands for Glass Molded optics]
|Focal Length & Maximum Aperture||16-35mm f/2.8|
|Lens Construction||16 elements in 12 groups|
|Diagonal Angle of View||108°-63°|
|Focus Adjustment||AF with full-time manual|
|Closest Focusing Distance||0.92 ft./0.28m|
|Filter Size||82mm, P=0.75mm/1 filter|
|Max. Diameter x Length, Weight||3.5 in. x 4.4 in./ 88.5mm x 111.6mm|
The MTF plots do show an improvement in edge sharpness, especially at 16mm