Nikon Patents: Z 16-34mm f/2.8, Z 18-50mm f/2.8-4 & Z 16-50mm f/4 Lenses

Nikon has filed three new patents for NIKKOR Z 16-34mm f/2.8 Lens, NIKKOR Z 18-50mm f/2.8-4 Lens, NIKKOR Z 16-50mm f/4 Lens, which are designed for Nikon full frame mirrorless cameras. Take a look at the patent details below:

[Publication number] JP 2021-33242(P2021-33242A)
[Publication date] March 1, 2021
[Patent application title] A variable magnification optical system, an optical device, and a method for manufacturing a variable magnification optical system.

Embodiment 1: 16-34mm F2.8
Zoom ratio: 2.061
Focal length: 16.500 34.000 mm
F number: 2.910 2.910
Angle of view: 105.504
Image height: 20.787 21.700 mm
Lens length: 157.563 147.452 mm
Back focus: 14.914 34.732 mm

Embodiment 5: 18-50mm F2.8-4
Zoom ratio: 2.609
Focal length: 18.549 48.400 mm
F number: 2.910 4.120
Angle of view: 98.952
Image height: 20.449 21.700 mm
Lens length: 156.976 145.902 mm
Back focus: 20.533 50.882 mm

Embodiment 7: 16-50mm F4
Zoom ration: 2.933
Focal length: 16.500 48.400 mm
F number: 4.120 4.120
Angle of view: 105.504
Image height: 18.820 21.700 mm
Lens length: 156.081 146.333 mm
Back focus: 17.312 53.242 mm

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