Nikon has filed a new patent in Japan for a standard zoom lens for CX-mount mirrorless cameras.
The new patent describes Nikon 9-30mm f/1.8-2.8 lens designed for mirrorless cameras with 1-inch-type sensors. The mirrorless lens offers a 35mm focal length equivalent of approximately 24.5-81.5mm.
If it becomes available on the market, the Nikon 9-30mm f/1.8-2.8 lens would be a great choice for low-light photography. But the lens will probably more expensive than the f/3.5-5.6 model because of a better aperture range of f/1.8-2.8.
Nikon 9-30mm f/1.8-2.8 lens patented for mirrorless cameras
Explanation self interpretation of patent literature
- Patent Publication No. 2015-11191
- Published 2015.1.19
- Filing date 2013.6.28
- Example 1
- Zoom ratio 3.14
- The focal length f = 9.3-19.1-29.1mm
- Fno. = 1.8-2.5-2.9
- Angle of view 2ω = 85.1-44.7-29.8 °
- Image height Y = 8.0mm
- Total length 95.9-101.1-114.1mm
- BF 13.8- 18.9- 18.4mm
- 4-group zoom of positive and negative, positive
- Inner focus