In Nikon latest a patent new super wide angle lens for the Nikon 1 series mirrorless camera surfaced, the patent document says the lens have 7.5mm focal length and F2.8 Aperture. The Nikon 1 series CX (1″) format have 2.7X crop factor that clearly means (7.5mm X 2.7) = 20mm (approx) of focal length.
Nikon 7.5mm F2.8 Focal length translated by Japanese
- Patent Publication No. 2015-152851
- Published 2015.8.24
- Filing date 2014.2.18
- Example 1
- Focal length f = 7.54025mm
- Fno. 2.85
- Angle of view 2ω 94.66
- Y 8.00
- TL 51.2997
- Air conversion BF 13.6095
Nikon patents Mirror-Less interchangeable Sensor Camera also see more Nikon patents
