Patent: Canon RF 15-28mm f/4-5.6 IS and other wide angle optical designs

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Eventually we’re going to see more affordable RF mount lenses from Canon and one of the obvious types of lenses they’ll need is an affordable wide angle zoom lens.

Canon has published a patent for such a lens and others with the aim of making manufacturing easier, which also means less expensive.

Canon RF 15-28mm f/4-5.6 IS

  • Focal length: 15.40mm-27.50mm
  • F value: 4.00-5.60
  • Half angle of view: 54.51-38.94
  • Image height: 19.00mm-21.64mm
  • Overall length: 103.50mm-103.50mm
  • Back focus: 14.20mm

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