Canon Patent For 45x Zoom For Waterproof Powershot D Cameras

The Canon Powershot D30 (price & specs)

Egami (translated) spotted a patent filed by Canon that refers to a 45x zoom that appears to be for the water and dustproof PowerShow D compact camera series.

• Patent Publication No. 2014-109664
  • Published Date 2014.6.12
  • Filing date 2012.11.30
  • Related 2014-109665,2014-109666
• Example 1
  • Zoom ratio 44.41
  • Focal length f = 4.62-13.02-205.00mm
  • Fno. 3.91-6.14-9.00
  • Half angle ω = 36.14-16.58-1.08 °
  • The overall length of the lens 99.33-103.38-113.64mm
  • BF 12.11-10.81-4.28mm