Canon patent for new 50mm f/1.4 lens

Canon filed a patent for a 50mm f/1.4 lens. The patent literature refers to AF speed improvements.

The current EF 50mm f/1.4 was released back in 1993. A replacement could be on its way. It’s likely we have the patent for Canon’s next EF 50mm f/1.4 lens.

• Patent Publication No. 2015-138121
  • Published 2015.7.30
  • Filing date 2014.1.22
• Example 1
  • Focal length 49.10
  • F number 1.45
  • Half angle (in degrees) 23.78
  • Image height 21.64
  • Overall length of the lens 100.16
  • BF 38.10
• Canon patents
  • Positive ShiboTadashi
  • Inner focus (part of the first group)

[via Egami]