New Patent: Canon Powershot Lenses Including 18-70mm

Canon patent

According to the CN, Canon has just filed a new patent which includes one we’ve never seen before – an 18-70mmm powershot lens design. 

We will show three examples that this patent application goes into, there are more, but they are simply variations of the same 3 themes;

First we have the “normal” zoom of the powershot G series 1″ cameras; this example covers 24-115mm in equivalent focal length on a 1″ sensor.

  • zoom ratio 4.74
  • focal length 9.00 22.58 42.68
  • F number 2.06 3.09 4.12
  • half field angle 35.71 10.47
  • image height 6.47 7.65 7.89
  • lens total length 60.38 65.31 77.00
  • BF 3.00 10.18 8.34

This next example covers a lens design for an APS-C sized sensor, something similar to the G1X Mark III perhaps, with a focal length of 24-70mm equivalent.

  • zoom ratio 2.75
  • focal length 15.62 28.71 42.97
  • F number 2.50 2.88 3.15
  • half angle of view (degrees) 35.65 24.78 17.63
  • image height 11.20 13.25 13.66
  • lens Length 85.01 71.06 73.01
  • BF 3.00 19.72 16.57

The final example and possibly the most interesting, is a zoom lens for a 1″ sensor with an 18-70mm equivalent focal length.

  • zoom ratios 3.66
  • focal length 6.79 12.87 24.88
  • F-number 1.85 2.50 2.88
  • half angle of view (degrees) 43.60 30.74 17.59
  • image height 6.47 7.65 7.89
  • lens total length 60.00 54.02 54.00
  • BF 3.00 4.04 6.02

Read More Canon Lens Patent

See also 2019 Canon Lens Deals

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