Canon Patent for EF-S 15-105mm f/2.8-5.6 STM

Canon filed a new patent in Japan. The new patent describes the EF-S 15-105mm f/2.8-5.6 STM lens which looks like to be a new kit lens for APS-C sensor Canon DSLRs.

The patent application shows the details of a kit lens covers a excellent range starting from 15 to 105mm. The EF-S 15-105mm f/2.8-5.6 STM lens comes with a Stepping Motor.

If the lens becomes available into production, it will be a versatile lens for EOS 7D Mark II users. See the EF-S 15-105mm f/2.8-5.6 STM lens patent details.

canon-patent-for-ef-15-105mm-f2-8-5-6-lens

Canon EF-S 15-105mm f/2.8-5.6 STM Lens Patent

  • Patent Publication No. 2015-118141
    • Published 2015.6.25
    • Filing date 2013.12.17
  • Example
    embodiment
    Example Zoom ratio Focal length Fno. Half angle Image height Overall length of the lens BF
    1 4.12 24.75 52.09 101.92 3.60 4.81 5.83 41.16 22.56 11.98 21.64 146.25 166.83 195.25 38.99 58.34 73.70
    2 6.81 15.40 22.95 104.92 2.88 3.39 5.60 41.57 30.76 7.42 13.66 149.46 154.42 222.88 38.13 46.49 77.97
  • Canon patents
    • Positive and negative positive and negative positive and negative positive 7-group zoom
    • Inner focus (fourth group)

via Egami