A new Nikon 80-400mm f/4.5-5.6G lens just published in Japan (2012113182). There were several patents filed in the past (20100214667, 20100284092, 2009282214).
See the new patent detail below:
- Patent release date: June 14, 2012
- Patent filing date: October 26, 2010
- Focal length: 81.6 – 392.0mm
- Aperture: 4.6 – 5.8
- Lens length: 300.0mm
- Lens design: 20 elements in 13 group, 1 ED element
- Internal focus and zoom
- VR
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via: nr