17-28mm Focal Length/ 9 (Circular Diaphragm) Blades/ 13 Elements In 11 Groups Lens Construction/ 67mm Filter Diameter/ RXD Stepping Motor/ Fluorine Coating/ Moisture-Resistant Construction/ Black Finish
17-28mm Focal Length/ 9 (Circular Diaphragm) Blades/ 13 Elements In 11 Groups Lens Construction/ 67mm Filter Diameter/ RXD Stepping Motor/ Fluorine Coating/ Moisture-Resistant Construction/ Black Finish