Canon EF 24-70mm f/2.8L II USM review
Meeting the ever-increasing demands on image quality that digital
photography brings, the redesigned EF 24-70mm f/2.8L II USM is the latest
update to the acclaimed L-Series of EF optics, re-establishing a new
standard for superb optics, high-end durable construction, and performance
in professional zoom lenses. A standard focal length zoom lens, it features
a large aperture throughout its focal length. Featuring the latest advances
in optical lens design, it utilizes 1 Super UD lens element and 2 UD lens
elements that help minimize chromatic aberration in the periphery at
wide-angle as well as reduced colour blurring around the edges of the
subject. In addition, 2 types of aspherical lenses are combined to help
reduce spherical aberration over the entire image area as well as through
the full zoom range. Optimized lens coatings also help ensure exceptional
colour balance while minimizing ghosting. The lens is also equipped with a
circular 9-blade diaphragm for beautiful, soft backgrounds. A ring-type USM
and high-speed CPU with optimized AF algorithms enable silent and fast
autofocusing. Built for the rigors of professional use as well as to meet
the increased number of shots available with digital photography,
it’s constructed with improved dust sealing and water resistance
while fluorine coatings on the front and rear lens surfaces help reduce
soiling, smears, and fingerprints. A zoom lock lever locks the zoom
position at the wide end for safe transporting while attached to an EOS
DSLR camera over the shoulder.