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More Canon lens patents have shown up. This time we get some macro patents that also include hybrid IS. We’ve been told that the <a href="http://www.bhphotovideo.com/c/product/112541-USA/Canon_2539A007_Telephoto_EF_180mm_f_3_5L.html/bi/2466/kbid/3296" target="_blank">180mm f/3.5L macro</a> is on its way out, and this could be the direction Canon takes it.</p>
<p>A few other focal lengths also appear in the patent as well such as 200mm & 300mm versions with hybrid IS.</p>
<p>The information below is a Google translation.</p>
<ul>
<li><strong>Patent Publication No. 2014-41224</strong>
<ul>
<li><span>Publication date 2014.3.6</span></li>
<li><span>Filing date 2012.8.22</span></li>
</ul>
</li>
<li><strong>Example 1</strong>
<ul>
<li><span>Zoom ratio 1.37</span></li>
<li><span>Focal length f = 180.03-167.06-131.08mm</span></li>
<li><span>Fno (3.6-4.8-5.8 actual aperture). 3.6-3.3-2.59</span></li>
<li><span>Half angle ω = 6.85-7.38-9.37 °</span></li>
<li><span>Image height 21.64mm</span></li>
<li><span>The overall length of the lens 228.39mm</span></li>
<li><span>BF 68.14mm</span></li>
</ul>
</li>
<li><strong>Example 2</strong>
<ul>
<li><span>Zoom ratio 1.58</span></li>
<li><span>Focal length f = 198.49-164.7-125.48mm</span></li>
<li><span>Fno (3.6-4.8-5.8 actual aperture). 3.6-2.99-2.28</span></li>
<li><span>Half angle ω = 6.22-7.48-9.78 °</span></li>
<li><span>Image height 21.64mm</span></li>
<li><span>The overall length of the lens 231.65mm</span></li>
<li><span>BF 71.4mm</span></li>
</ul>
</li>
<li><strong>Example 3</strong>
<ul>
<li><span>Zoom ratio 1.92</span></li>
<li><span>Focal length f = 289.97-213.39-151.33mm</span></li>
<li><span>Fno (3.6-4.8-5.8 actual aperture). 3.6-2.65-2.21</span></li>
<li><span>Half angle ω = 4.27-5.79-8.14 °</span></li>
<li><span>Image height 21.64mm</span></li>
<li><span>The overall length of the lens 294.36mm</span></li>
<li><span>BF 68.05mm</span></li>
</ul>
</li>
<li><strong>Canon patents</strong>
<ul>
<li><span>Inner focus</span></li>
<li><span>(Part of the fourth lens group) antivibration</span></li>
<li><span>Supports Shifutobure (???)</span></li>
<li><span>Floating</span></li>
</ul>
</li>
</ul>
<p>Source: [<a href="http://egami.blog.so-net.ne.jp/2014-03-12" target="_blank">EG</a>]</p>
<p><strong><span style="color: #ff0000;">c</span>r</strong></p>