CANON EF 17-40MM F/4L USM LENS

-17 40 millimeter ultra-wide angle zoom lens with f/4 maximum
aperture for Canon SLR cameras.
Diagonal angle of view 104° 57° 30’
-3 aspherical lens elements and super
UD glass element create superior
optics in all conditions, Closest
focusing distance : 0.9 feet
-Powerful ring type ultra-sonic
monitor (USM) produces fast and
silent autofocusing, Focuses as
close as 11 inches; supports
screw in 77 millimeter filters or
up to 3 gel filters. Rounded seven-blade
diaphragm contributes to a pleasing out
of focus quality that benefits the use of
shallow depth of field and selective focus techniques
-Suitable for Wedding/Nature Photography, Weather resistant
construction; Water and Dust Resistant; measures 3.3 inches
in diameter