BlattWorld, Item Details: Tokina 17mm f/3.5 AT-X 17AF PRO

The AT-X 17 AF PRO lens features the exclusive “Focus Clutch Mechanism.”, a signature of the Tokina PRO series lenses, which provides a faster, smoother auto focus operation and a smooth manual focus action not normally found in today’s auto focus lenses

. An update to the successful AT-X 17 AF, the AT-X 17 AF PRO also features a floating element auto focus system, an all glass aspherical lens element, and all aluminum lens barrels with a chrome-plated, brass mount plate. The lens elements are made of h

igher quality HLD (high refection, low dispersion) glass for better resolution and contrast. The filter size has been changed from 72mm to a 77mm filter thread on the AT-X 17 AF PRO. It is now possible to have Tokina lenses that cover a range from 17mm

to 300mm with just one size of filters