US 2005/0068636 A1↗2005Assignee: Nikon CorporationInventors: Satoshi HayakawaNIKON AF-S DX ZOOM-NIKKOR 18-70mm f/3.5-4.5G IF-ED— 15 elements / 13 groups (physical count), 18-70mm f/3.5-4.5 (production)