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Canon Patent for EF 35mm f/1.4L II USM Lens

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Canon has filed a new patent in Japan. The new patent describes the long-mentioned EF 35mm f/1.4L II prime lens.

The upcoming Canon EF 35mm f/1.4L II USM lens is expected to be the next new L lens after Canon EF 11-24mm f/4L USM and it is rumored to be announced in late Summer 2015.

The filed patent appears to refer to the successor of the Canon EF 35mm f 1.4L USM which is released in back 1998 and currently priced for $1,479 at Amazon.

Canon EF 35mm f/1.4L USM II Lens Patent


Explanation and self-interpretation of the patent literature

  • Patent Publication No. 2015-72370
    • Published 2015.4.16
    • Filing date 2013.10.3
  • Example 1
    • Focal length f = 35.47mm
    • Fno. 1.45
    • Half angle of view ω = 31.38 °
    • Image height Y = 21.64mm
    • Lens length 141.37mm
    • BF 39.37mm
    • Positive, positive ShiboTadashi

via EG