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Nikon patent of 100-400mm F4-5.6
Nikon applied for a patent about 100-400mm F4.0-5.6 for FX format digital lens. Nikon will renew 80-400/4.5-5.6D as 100-400/4-5.6G not 80-400/4.5-5.6G soon.
Nikon applied for a patent about 100-400mm F4.0-5.6 for FX format digital lens. Nikon will renew 80-400/4.5-5.6D as 100-400/4-5.6G not 80-400/4.5-5.6G soon.日本語ページはこちら(Japanese page is here.)
paten：100-400mm F4.0-5.6
Ai AF VR Zoom-Nikkor 80-400mm f/4.5-5.6D ED (2000)
- Patent Publication No.2010-276744
- published 2010/12/09
- filled 2009/05/27
- Embodiment2
- focal distance f=102.00-392.00mm
- Fno=4.12-5.77
- angle of view 23.68-6.15
- image circle 43.2mm
- lens length 255.00mm (インナーズーム)
- back focus 55.0000-74.4012mm
- MOD 1.8m
- aspherical 1
- 5 groupes zoom lens
- rear fous type
A patent of Nikon was just shown one year ago. It is AF-S Nikkor 80-400mm F4.5-5.6G ED VR. Nikon improved it more and assumed it AF-S Nikkor 100-400mm F4-5.6G ED VR.
Performance at INF(a=102.00mm、b=200.00mm、c=392.00mm)
Performance at MOD=1.8m(a=102.00mm、b=200.00mm、c=392.00mm)
