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Patent: Canon RF 135mm f/1.4L DS USM optical formula

Patent Canon RF 135mm f1 4L DS USM optical formula
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More optical formulas for large aperture RF mount prime lenses have appeared. This new patent showcases some RF mount prime lenses that utilize Defocus Smoothing, which first appeared in the RF 85mm f/1.2L USM DS.

Canon RF 24mm f/1.4L USM DS

  • Focal length: 24.55mm
  • F-Number: 1.45
  • Half angle of view: 41.39°
  • Image height: 21.64mm
  • Overall length: 119.13mm
  • BF: 38.01mm

Canon RF 135mm f/1.4L USM DS

  • Focal length: 131.00mm
  • F-Number: 1.41
  • Half angle of view: 9.38°
  • Image height: 21.64mm
  • Overall length: 182.28mm
  • Back focus: 13.87mm

The post Patent: Canon RF 135mm f/1.4L DS USM optical formula appeared first on Canon Rumors – Your best source for Canon rumors, leaks and gossip.

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