Canon Patent For EF 50mm f/1.4 Lens

Canon filed a new patent in Japan. The new patent describes the EF 50mm f/1.4 prime lens designed for Canon DSLRs with full-frame image sensors.

From the patent application we can say the EF 50mm f/1.4 lens will have 10 elements in six groups. See the patent details below.

Current EF 50mm f/1.4 USM lens was released in 2003 and selling at a price around $350.

Canon EF 50mm f/1.4 Lens Patent

• 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)

Canon’s EF 50mm f/1.4 USM lens is a standard length lens featuring superb quality and portability. Its f/1.4 maximum aperture makes it very effective in low light situations and able to provide shallow depth of field focus.

via Egami