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New Patent: Canon EF-S 20mm f/2.8 STM Lens

Canon has filed a new patent: Canon EF-S 20mm f/2.8 STM Lens. Up to now, Canon 20mm f/2.8, 24mm f/2.8, 28mm f/2.8, 50mm f/2.8 have been affordable prime lens lineup. And the 20mm f/2.8, 24mm f/2.8, 50mm f/2.8 tune into STM.

Patent Publication No. 2015-111192 (Google Translated)

  • Published 2015.6.18
  • Filing date 2013.12.6

Example 3

  • Focal length 20.65mm
  • Fno. 2.88
  • Half angle of view ω = 33.48 °
  • Image height Y = 13.66mm
  • Overall length of the lens 64.00mm
  • BF 35.30mm

Canon patents

  • Negative ShiboTadashi
  • The pay-out the entire

Source: egami

Read more: Canon Rumors

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