Translate this blog into your language

Friday, November 20, 2015

New Canon Patent For 20-45mm f/2.8-4 Lens




The Japanese photography blog Egami has uncovered a new Canon patent for a 20-45mm f/2.8-4 lens. As reported in my earlier posts, Canon is expected to announce more EF, EF-S and EF-M lens in 2016.  

Patent Publication No. 2015-197593 (Google Translated)

  •     Published 2015.11.9
  •     Filing date 2014.4.1
  •     Zoom ratio 2.25
  •     Focal length f = 20.00 23.60 45.00
  •     Fno. 2.75 2.90 4.16
  •     Half angle of 47.25 42.51 25.68
  •     Image height 21.64 21.64 21.64
  •     Overall length 158.28 156.32 173.36
  •     BF 42.05 46.10 73.14

No comments: