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Wednesday, December 27, 2017

New Canon Patent - EF 17-35mm f/4-5.6 IS STM Lens




I am not sure how many photographers will be interested in buying a new, non 'L' zoom lenses for their full frame camera but Canon has patented the EF 17-35mm f/4-5.6 IS STM design. It appears to be slow and may be more appropriate for the APS-C sensor cameras.

Canon EF 17-35mm f/4-5.6 IS STM USM lens

  • Focal distance: 17.50  25.12  34.09
  • F number: 4.00 4.85   5.88
  • A half field angle (degree): 51.03  40.73  32.40
  • Image height: 21.64  21.64  21.64
  • Whole length of the lens: 130.88 128.52 134.05
  • BF: 37.60  49.75  64.06
  • Japan patent application 2017-161568

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