Canon Patent for 11-24mm f/4 Lens

Egami (translated) spotted a patent filed by Canon for an 11-24mm f/4 wide-angle lens for full-frame sensors.

• Patent Publication No. 2014-10286
  • Publication date 2014.1.20
  • Filing date 2012.6.29
• Example 1
  • Zoom ratio 2.06
  • Focal length f = 11.30-18.00-23.30mm
  • Fno. 4.10
  • Half angle ω = 62.42-50.24-42.88mm
  • Image height Y = 21.64mm
  • 172.19-161.28-162.86mm overall length of the lens
  • BF 38.82-52.31-63.15mm