Patents: Canon EF 17-35mm F/4-5.6 and 12-385mm F/1.8-4 Lenses

 

 

Canon has filed two new patents for EF 17-35mm f/4-5.6 IS STM Lens and 12-385mm f/1.8-4.0 Lens. The Canon EF 17-35mm f/4-5.6 IS STM Lens will be designed for Canon full frame DSLR cameras, Canon 12-385mm f/1.8-4.0 Lens is designed for a camcorder with Micro Four Thirds sensor.

Canon EF 17-35mm f/4-5.6 IS STM Optical Formula

  • Focal distance: 17.50  25.12  34.09
  • F number: 4.00 4.85   5.88
  • A half field angle (degree): 51.03  40.73  32.40
  • Image height: 21.64  21.64  21.64
  • Whole length of the lens: 130.88 128.52 134.05
  • BF: 37.60  49.75  64.06

 

Canon 12-385mm f/1.8-4.0 Lens

  • Focal length: 12.00 – 385.00 mm
  • F No.: 1.85 – 4.00
  • ω: 39.06 – 1.61
  • Image height: 9.74 – 10.82 mm
  • Back focus: 24.11 – 11.01 mm
  • Lens length: 254.88 – 280.86 mm

Via: Hi-lows-note, CanonRumors

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