Canon Patent for EF-M 55mm f/3.5 Macro Lens

Canon has a new patent application for a new macro lens. The new patent describes the EF-M 55mm f/3.5 lens designed for Canon mirrorless cameras with APS-c sized  sensors.

The Canon EF-M 55mm f/3.5 macro lens comes with a maximum aperture of f/3.5. Canon is working seriously on the EOS M system, see the similar optical formula deisgned for Canon full-frame mirrorless system.

Patent details of the EF-M 55mm f/3.5 macro lens for a Canon APS-C sensor mirrorless camera can be seen below.

Canon EF-M 55mm f/3.5 Macro Lens Patent

• Patent Publication No. 2015-215391
  • Published 2015.12.3
  • Filing date 2014.5.8
• Example 1
  • Focal length 53.73
  • F-number 3.50
  • Half angle (in degrees) 14.26
  • Image height 13.66
  • Overall length of the lens 76.39
  • BF 17.69

via Egami