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Canon patent for EF 15-105mm f/2.8-5.6 lens

2015_118141_fig03

Canon filed a patent for an EF 15-105mm f/2.8-5.6 lens.

  • 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]
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