Canon RF 70-200mm f/4L Internal Zoom Lens Patent

Here is the latest patent for Canon RF 70-200mm f/4L Internal Zoom Lens.

The company already has the 70-200mm glass for RF-mount. It is their first RF mount internal zoom lens: RF 70-200mm f/2.8L IS USM Lens (B&H Photo Video/Adorama/Amazon). This lens turns out one of the best selling lenses currently. According to latest Canon Japan patent, Canon may also announce a new RF 70-200mm f/4L internal zoom lens.

You can take a look at patent details of this lens:

Canon RF 70-200mm f/4.0L 

  • focal length 72.00 133.20 194.00
  • F-number 4.10 4.10 4.10
  • Half angle of view (degrees) 16.72 9.23 6.36
  • Image height 21.64 21.64 21.64
  • Total lens length 202.98 202.98 202.98
  • BF 38.71 38.71 38.71

via: JPA

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