Ricoh files a patent for a 200mm f/2.8 full frame lens (for Pentax K-1)

Pentax 200mm f:2.8 ED IF DC full frame lens
Ricoh has a new patent application filed in Japan for a 200mm f/2.8 ED IF DC full frame lens (most likely designed for the Pentax K-1):

  • Patent publication No. 2016-51100
  • Published on April 11th, 2016
  • Filing date: September 1st, 2014
  • Focal length: 200
  • F-number: 2.8
  • Half angle of view: 6.3 °
  • Image height: 22
  • BF (back focus): 66.870
  • Overall length of the lens: 184.874

Sigma also recently filed a patent for a 200mm f/2 DG OS HSM lens.

Via Egami

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