New Sigma Patent: Sigma 12mm f/2.8 Lens

Sigma has just filed a new lens patent in Japan. This lens is Sigma 12mm f/2.8 lens, for full frame cameras. This could be widest Sigma Art prime lens for Nikon DSLR cameras. Below are some specs of Sigma 12mm f/2.8 lens:

Specification and lens arrangement of embodiment 8
Focal length: 12.42 mm
F number: 2.93
Angle of view: 120.49
Image height: 21.63 mm
Lens length: 169.4 mm

via: So-Net