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Canon patent for 135mm f/2 lens with Apodization Filter

canon patent

Canon patent for a 135mm f/2 lens with apodization filter. This is not the first Canon patent for an optical formula with apodization filter, we got a 135mm f/2.8 and a 180mm f/3.5.

  • Patent publication number 2016-218444
    • Release date 2016.12.22
    • Application date 2015.5.20
  • Example
    • Focal length 130.98
    • F number 2.06
    • Field of View 9.38
    • Image height 21.64
    • Lens total length 159.05
    • BF 53.99
  • Canon patent
    • Even in the presence of vignetting, a good blurred image at all angle of view
[via Egami]
  • peevee

    Simple formula, triple Gauss, and seems no aspherics. Is not going to be very sharp, but perfect for portraits.

    • pbl

      Cool. The character of a lens goes much further than mere sharpness. Looking forward to see what this one will deliver. Among other things, wishing for a little shorter MFD vs the existing one.

      • peevee

        I strongly doubt they will make it. Although that apodization filter, especially if strong enough, will make spherical aberrations less noticeable, but no aspherics means no onion rings. They should make it, would be instant classic, and it is like $30 to make (Canon of course will ask $1300). :)

        • Ben

          The Sony version is $1500 at 100mm and f/2.8, so $1300 for 135mm and f/2.0 would be a pretty good deal. I’m not sure why you think this won’t be very sharp, as the equally simple Sony is one of the sharpest lenses tested thus far.

          • peevee

            “I’m not sure why you think this won’t be very sharp”

            Because it lacks elements to correct many aberrations which reduce sharpness.

            “as the equally simple Sony is one of the sharpest lenses tested thus far.”

            Proof?

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