A new patent for Nikon 16-35mm f/2.8 VR lens has spotted on egami, Nikon has already announced the 16-35mm f/4G lens, so this f/2.8 lens will a new lens in 16-35mm family. And Canon has their EF 16-35mm f/2.8L lens for years.
Lens detail ( Translated by Google)
- Patent Publication No. 2012-247687
- Release Date 2012.12.13
- Filing date 2011.5.30
- Example 1
- 24.00 – – 33.95mm f = 16.48 focal length
- Fno. = 2.884
- 84 – – 63 ° 2ω = 108 angle of view
- Image height 21.64mm
- 164.15 – – 161.56mm 170.00 overall optical length
- 18 sheets 12 groups lens configuration
- Four 5 aspherical surfaces
- 3 ED glass sheets
- Nikon patents
- Inner Focus
- Shake Reduction
- By anti-vibration group and the rear group, and mitigate the effects of downsizing, eccentric aberration of the lens is given to
- Anti-reflection film made of a multi-layer
- Reduce flare, a ghost (n <= 1.3) and a small refractive index difference between the surface layer and the air
- In one example, n = 1.26 refractive index in MgF2 + SiO2
- Easy concave, convex surface subjected to the occurrence of the ghost