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Canon is clearly working on new ultra wide zoom lenses to add to the lineup, we have <a href="http://www.canonrumors.com/patent-canon-ef-17-35mm-f-4-5-6-is-stm/">yesterdays patent showing a EF 17-35mm f/4-5.6 IS STM</a> and today we see a patent application that covers 6 different ultra wide angle zoom optical formulas for APS-C sensors.</p>
<p><strong>Optical Formulas in Japan patent application: 2017-207649 </strong></p>
<ul>
<li>14-35mm f/2.8</li>
<li>9-22mm f/2.8</li>
<li>10-35mm f/2.8-3.5</li>
<li>18-80mm f/4.0</li>
<li>18-75mm f/4.0</li>
<li>12-30mm f/2.8</li>
</ul>
<p>This patent application may pertain to development of lenses that have already been released, or they could be part of future lens designs.</p>
<p>Read the full breakdown of the patent application <a href="https://www.canonnews.com/new-patent-application-for-a-variety-of-high-end-aps-c-uwa-zoom-lenses">here</a>.</p>
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