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Canon Patent for EF 1000mm f/5.6 DO Lens

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Canon has patented a super-telephoto prime lens in Japan. The new patent describes the EF 1000mm f/5.6 DO lens designed for Canon DSLRs with full-frame image sensors.

The EF 1000mm f/5.6 DO is a super-telephoto prime lens that was made by Canon. The optic will use an EF mount, and is compatible with the Canon EOS camera range.

It has a focal length of 1000mm and a constant aperture of f/5.6. From the DO designation we understand the optic will have diffractive optical feature.

Canon lenses which feature the diffractive optical (DO) are smaller and lighter compared to the same focal length lenses but the price becomes generally higher when the lenses have optical formual for DO.


Canon EF 1000mm f/5.6 DO Lens Patent

The EF 1000mm f/5.6 DO lens would be perfect for the upcoming Olympic Games. This optic in the patent application is believed to be ready for the 2020 Olympic Games in Tokyo.

Canon currently has the EF 800mm f/5.6L IS USM telephoto prime lens which is currently priced for $12,999.95 at Amazon.

  • Patent Publication No. 2016-102852
    • Published 2016.6.2
    • Filing date 2014.11.27
  • Example
    • Zoom ratio 1.00
    • Focal length 950.00
    • F-number 5.80
    • Angle of view 1.30
    • Image height 21.64
    • Overall length of the lens 485.94
    • BF 0.40
  • Canon patent
    • Positive and negative Shibomake
    • Diffractive optical element (first group)
    • Inner focus (the second group)