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Firmware Update

Canon 50mm F1.8 IS Lens Patent

50mm-F1.8Canon 50mm F1.8 IS (Image Stabilization) Lens Patent surfaced over the web, Canon updating its prime lens by improving optics and adding IS to them, hope the 50mm F1.8 IS version will remain affordable , take a look at the patent details below

  • Patent Publication No. 2013-142782
    • Publication date 2013.7.22
    • Filing date 2012.1.11
  • Example 1
    • Focal length f = 51.51mm
    • Fno. 1.85
    • Half angle ω = 22.78 °
    • Image height 21.64mm
    • The overall length of the lens 76.78mm
    • BF 37.84mm
    • 8 pieces of 7 lens configuration
  • Canon patent
    • (Optical system of the anti-vibration unit is located between the aperture and the front lens group) and vibration-proof

src- egami

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