Patent of Canon 3-300mm f/1.8-9 IS Lens

Canon 3-300mm f1.8-9 ISCanon has just filed a new patent of Canon 3-300mm F1.8-9 IS lens. This is the first 100x zoom lens in the world.

  •  Patent Publication No. 2014-174524 (Google Translated)
    Published 2014.9.22
    Filing date 2013.3.13
  • Example 4
    Zoom ratio 98.52
    The focal length f = 3.07 53.41 302.40mm
    Fno. 1.85 8.14 9.00
    Half angle ω = 36.2 2.40 0.50 °
    Overall length of the lens 110.05mm
    BF 12.67 27.40 5.19mm
    4-group zoom of positive and negative, positive
    Inner zoom (the second group, the third group)
    Rear focus (fourth group)
    Anti-vibration (third group)

Nikon has just announced a new 83x zoom Coolpix P900, so could Canon PowerShot SX70 HS get a 100x zoom?

Source: EG

Read more Canon Lens Patents

Leave a Reply

Your email address will not be published.

This site uses Akismet to reduce spam. Learn how your comment data is processed.