Canon Patent For EF 85mm f/1.2L III and Several Other Primes

Egami has discovered a new patent filed by Canon. The new patent describes lens designs for several 85mm and 50mm prime lenses.

EF 85mm f/1.2L II replacement, an updated version (85mm f/1.2L III) has been mentioned as being under development for quite some time.

This patent includes both a 85mm f/1.2 and an 85mm f/1.8 lenses as well as a 50mm f/1.4 and a 100mm f/2. Below are the details of the patent.

Canon Patent For EF 85mm f/1.2L III and Several Other Primes

• Patent Publication No. 2014-52412 
  • Publication date 2014.3.20
  • Filing date 2012.9.5
• Example
  

  Example	Focal length	Fno.	Length	BF
  One	85.00	1.24	125.55	38.98
  Two	85.00	1.80	113.57	39.50
  Three	51.70	1.41	88.04	39.00
  Four	100.00	2.00	120.00	39.60

  Image height = 21.64mm

via EG