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Canon Patent Application: Canon RF 135mm F1.4
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Canon Patent Application: Canon RF 135mm F1.4

We know that Canon is going to make some more jaw dropping primes, and we've discovered buried in a related patent application the design for a Canon RF 135mm F1.4.  This would make an excellent upgrade to the lengendary Canon EF 135mm F2.0.

From the Patent Application;

Focal length:      131.00
F-Number:            1.41
Half angle of view:  9.38
Image height        21.64
Total lens length  182.28
BF                  13.87

This I believe will be one of the lenses coming out in the near future. It essentially completes the professional prime portrait lens kit.

Japan Patent Application 2020-008628


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How to view Japan Patent applications.

Unfortunately, there's no direct way of linking to the patent application (sad!) however, this is the easiest process to view a japan patent or application.

  1. Go to the Japan Patent Office search page.
  2. If it's a patent application (they are usually in the format of Year-Number ie: 2017-011300) then type the patent application number into the second field down from the top where it says publication of patent application. 
  3. Click on search.
  4. Then click on the patent application number link, and there's the patent application!

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