Bright F2.8 aperture throughout entire zoom range
Dust- and splash-proof construction with weather sealing
Fast AF with full-time manual focus
Virtually zero distortion at infinity focus
High-precision, rugged brass bayonet mount
Rounded diaphragm
Pros
High sharpness, even at full aperture
Constant brightness of f/2.8
Little distortion
Dust- and splash water-tight
Quiet and fast autofocus
Cons
Big and heavy
No filter thread for screw filters
Not the cheapest wide-angle zoom
This is the lens for you that are looking for an high quality optic that deliver quality images everytime
Landscapes
Architecture
Astro
