Ricoh applied for APS-C format lens patent

  This article comes from Seying Wuji

   According to the latest news, Ricoh has applied for two new lens patents for APS-C format SLR cameras. They are:

  Pentax 15-45mm f/2.8

Ricoh applied for APS-C format lens patent

   focal length: 15.5~26.0~43.7 mm

   aperture value: 2.9~2.9~2.9

   half angle of view: 44.3~28.4~17.6

  image height: 14.24mm

  Back focal length: 35.592~50.304~67.802 mm

  Pentax 18-105mm f/2.8

Ricoh applied for APS-C format lens patent

   Focal length: 18.5~43.5~101.9 mm

   aperture value: 2.9~2.9~2.9

   half angle of view: 39.0~17.8~7.7

   image height: 14.24 mm

   back focal length: 30.120~47.793~66.140 mm

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