Fujifilm Patent for XF 13mm F1.8 Lens

Fujifilm has filed a patent for a new wide-angle lens in Japan. The new patent describes a XF 13mm F1.8 lens designed for company’s APS-c size sensor X-series mirrorless cameras.

It is a 20mm equivalent focal length wide-angle prime optic with a bright aperture of f/1.8. However the patent application refers to a Fujinon XF 13mm f/1.8 when considering the crop factor.

It seems that a new Fujinon XF 13mm f/1.8 lens is in the works. Even the translation is not perfect this also explains the significant savings on the Fujinon XF 14mm F2.8 R model.

Fujifilm patent for 20mm equiv XF 13mm F1.8 lens

Fujifilm Patent for XF 13mm F1.8 Lens

The wide-angle optic has 4 ED elements and the lens construction is made of 11 elements in 9 groups. Here are the patent details of the lens translated by machine.

DESCRIPTION, SELF-INTERPRETATION OF THE PATENT LITERATURE

  • Patent Publication No. 2016-95461
    • Published 2016.5.26
    • Filing date 2014.11.17
  • Example 1
    • Focal length 1mm
    • Bf 2.08 – 2.05 – 1.94
    • FNo 1.90 -. 1.92 – 2.00
    • Full angle of view 2ω 95.2 – 94.4 – 91.2
    • Lens configuration 9 groups 11 sheets
    • ED 4
  • Fujifilm patents
    • Negative-positive ShiboTadashi, or negative-positive Shibomake
    • Rear focus

Fuji is very busy in 2016 but the official lens roadmap doesn’t include a XF 13mm F1.8 lens in near future. If there will be an optic like this we won’t see it until 2017. So stay tuned with us for for information!

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