New Patent: Canon EF 50mm f/1.4 Lens

Canon has filed another new patent: Canon EF 50mm f/1.4 Lens. There have several new 50mm f/1.4 patents in the past few years. It seems that this new 50mm f/1.4 Lens has internal focus and an odd negative front element.

See the patent details below:

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

Read More: Canon Rumors and Best Canon Lenses for Wildlife Photography.