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Patent: Canon EF 600mm f/4 DO IS USM Lens

Canon has filed a new patent for EF 600mm f/4 DO IS USM lens. The prototype of this lens was shown at Canon EXPO in September 2015. Thanks to the diffractive optics inside, the new EF 600mm f/4 DO IS lens is substantially shorter than the current EF 600mm f/4L IS II USM lens (Amazon, B&H). Last year, Canon announced the EF 400mm f/4 DO IS II USM lens, it’s really amazing! And this Canon EF 600mm f/4 DO IS USM Lens is expected to be announced in the second half of 2017.

Take a look at the patent details below (translated by Google):

Patent Publication No. 2016-200685

  • Publication date 2016.12.1
  • Application date 2015.4.9

Example 1

  • Focal length 585.00
  • F number 4.12
  • Half angle of view (degree) 2.12
  • Image height 21.64
  • Lens total length 335.32
  • BF 66.92
  • Effective front diameter 142.00
  • 3 aspheric surfaces
  • Super UD 2

See also: Best Canon Lenses for Wildlife Photography.

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Via: Egami

Related posts:

  1. New Patent: Canon EF 600mm f/4 DO IS USM Lens
  2. New Patent: Canon EF-M 600mm f/5.6 DO IS Lens
  3. New Patent: Canon EF 200-600mm f/4.5-5.6L USM Lens
  4. Canon EF 600mm f/4L IS DO BR USM Lens Prototype at Canon EXPO
  5. New Patent: Canon EF 20-45mm f/2.8-4 Lens

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