| Ultra-wide angle lenses have always been in demand by architectural,
corporate, and other top pro photographers. This new lens features
completely redesigned optics including 2 high-precision Aspherical
elements and two totally new UD-glass elements. The result is superior
image quality: better contrast and sharpness at the outer edges,
and a reduction in chromatic aberrations that can sometimes be
seen with high-resolution digital SLRs. Its diagonal angle of view
is an impressive 114°-anything larger would be a Fisheye lens.
It has a built-in lens hood, and has been dust- and moisture- proofed.
The lens uses a rear focusing system, high-speed CPU, and a powerful
ring-type USM with revised electronics for faster, more responsive
AF. This lens continues the proud tradition of superior clarity
optics found in L-series Canon lenses. |
