Canon patents for a 16-35mm f/2.8 lens and 2.8x teleconverter

Patent application 201263568 is for a new 16-35mm f/2.8 lens from Canon. The patent also includes calculations for a 17-35mm f/2.8-4 and 16-35mm f/2-2.8 lenses. The interesting part is that Nikon recently also filed a patent for a new 16-35mm f/2.8 lens.

Canon also filed a patent 201247869 in Japan for a 2.0x and 2.8x teleconverters:

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  • goose

    f4 to f11 ? can any canon pull-off an AF with that much conversion? or is going to be Manual Focus all the way? just curious. havent had any chance to use any kind of teleconverters.

    • I think no current Canon body will auto focus proper with that 2.8X teleconverter. If Canon fanboi want AF they can use that teleconverter with only f/2 lens or larger.

      • MJr

        Seriously, fanboi ? How old are you.

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