Fujinon XF300mm f/2.8, XF400mm f/4, XF600mm f/6, and Finally GF300mm f/2.8 Patents Found

• 2 years ago

Digicame-info found patents for Fujinon XF300mm f/2.8, XF400mm f/4, XF600mm f/6, and Finally GF300mm f/2.8 on J-PlatPat. These lenses may never be produced, but I am sure GFX fans would love to get their hands on a Fujinon GF 300mm f/2.8.

• Applicant: FUJIFILM Corporation
  
  Publication number: P2022-167114A
  
  Application number: P2021-72676
  
  Publication date: 2022.11.4 Title
  
  of the invention: Imaging lens and imaging device
• A telephoto imaging lens that has excellent optical performance and is light in weight, and an imaging apparatus that includes this imaging lens.
• 2. Description of the Related Art In recent years, there has been a demand for a telephoto imaging lens that has good optical performance and is lightweight.
• The present disclosure has been made in view of the above circumstances, and an object thereof is to provide a telephoto imaging lens that achieves light weight while having good optical performance, and an imaging apparatus equipped with this imaging lens. do.

• Example 1 (for 300mm F2.8 APS-C)
  
  Focal length: 290.922
  
  Back focus: 47.006
  
  F number: 2.89
  
  Maximum total angle of view: 6.2

• Example 2 (for 300mm F4 APS-C)
  
  Focal length: 290.926
  
  Back focus: 64.029
  
  F number: 4.16
  
  Maximum total angle of view: 6.2

• Example 3 (for 400mm F4 APS-C)
  
  Focal length: 389.546
  
  Back focus: 54.074
  
  F number: 4.13
  
  Maximum total angle of view: 4.6

• Example 4 (for 600mm F6 APS-C)
  
  Focal length: 581.587
  
  Back focus: 61.499
  
  F number: 6.01
  
  Maximum total angle of view: 3.2

• Example 5 (for 300mm F2.8 medium format)
  
  Focal length: 291.010
  
  Back focus: 66.653
  
  F number: 2.90
  
  Maximum total angle of view: 10.8

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