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Friday, August 21, 2015

Canon Patent - EF-S 100-300mm f/4-5.6 IS




The Japanese photography blog, Egami has discovered a new Canon patent for a EF-S 100-300mm f/4-5.6 IS lens. We have not seen a new EF-S lens in a while.

Patent Publication No. 2015-138178

  • Published 2015.7.30
  • Filing date 2014.1.23


Example 1

  • Focal length 102.00 195.50 291.20mm
  • F number 4.16 5.14 5.88
  • Half angle of 7.63 4.00 2.69 °
  • Positive and negative positive and negative four-group zoom
  • Anti-vibration (part of the second group)

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