Canon files a patent for a 600mm f/5.6 lens
Canon's patent JPO 2010-145832 is for a 600mm f/5.6 lens:
600mm f/5.6 lens patent details:
- Focal distance 582.48
- F number 5.85
- Field angle 2.13
- Image height 21.64
- Whole-length-of-the-lens 346.68
Canon also filed a patent for a 24-105/3.5-5.6 zoom lens:
- Patent publication: 2010-237455
- Patent released: 10/21/ 2010
- Patent filed: 03/31/2009
- Focal length f: 24.90 - 102.02mm
- Aperture Fno: 3.62 - 5.82
- Angle of view: 81.96 - 23.94 °
- Image Ccrcle: 43.28mm
- Total lens length: 119.84 - 151.84mn
- One aspherical surface
Another Canon patent is for a sensor that can capture light with the help of micro lenses (Leica uses this technology in the M9, maybe Canon is preparing for their mirrorless camera):
- Patent publication: 2010-243682
- Patent released: 10/28/2010
- Patent filed: 04/03/2009