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A patent showing a Canon 10-120mm f/1.8 lens for a 1″ sensor has become public. Such an optical formula may be a remanent from the XC10 development or could appear in a future video camera product. I’m sure a lot of people would have rather seen an f/1.8 lens in the XC10, instead of the f/2.8 lens it comes with.</p>
<p>Patent Publication No. 2015-75523</p>
<ul>
<li>Published 2015.4.20</li>
<li>Filing date 2013.10.7</li>
</ul>
<p>Example 1</p>
<ul>
<li>Zoom ratio 11.54</li>
<li>Focal length 10.21 56.31 117.88</li>
<li>F number 1.87 1.79 1.78</li>
<li>Half angle (in degrees) 38.07 8.09 3.88</li>
<li>Image height 8.00</li>
<li>Overall length of the lens 555.0</li>
<li>BF 16.56</li>
</ul>
<p>Canon patents</p>
<ul>
<li>5-group zoom of positive and negative TadaS___adaS___adashi</li>
<li>Inner focus (part of the first group)</li>
<li>Inner zoom</li>
</ul>