New Patent: Canon 3.6-255mm F2.8-7 w/ Built-in Extender for PowerShot

canon-3-6-255mm-f2-8-7-patent

Canon has just filed a new patent for Canon 3.6-255mm F2.8-7 lens with a built-in extender for Powershot. It can take photos at 2000mm f/10 when converted to 35mm.


Detail translated by Google:

  • Patent Publication No. 2016-212210
    • Published 2016.12.15
    • Filing date 2015.5.7
  • Example
    • Zoom ratio 66.07
    • Focal length 3.71 10.16 245.00
    • F number 2.90 4.99 7.07
    • Half angle of view (degree) 40.59 20.88 0.91
    • Lens total length 94.31 86.88 150.26
    • BF 9.45 16.24 9.56
  • Super telephoto (D)
    • Focal length 359.99
    • F number 10.39
    • Half angle of view (degree) 0.62
    • Lens total length 150.26
    • BF 3.56

Source: EGAMI

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