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Canon has filed a patent for an EF 135mm f/2L optical formula with apodization filters.</p>
<p>From <a href="https://en.wikipedia.org/wiki/Apodization" target="_blank" rel="nofollow">Wikipedia</a> (Via <a href="http://www.the-digital-picture.com/News/News-Post.aspx?News=19701">TDP</a>):</p>
<blockquote><p><b>Apodization</b> is an optical filtering technique, and its literal translation is “removing the foot”. It is the technical term for changing the shape of a mathematical function, an electrical signal, an optical transmission or a mechanical structure. In optics, it is primarily used to remove Airy disks caused by diffraction around an intensity peak, improving the focus.</p></blockquote>
<p>Patent publication number 2016-218444 (Google Translate)</p>
<ul>
<li>Release date 2016.12.22</li>
<li>Application date 2015.5.20</li>
<li>Focal length 130.98</li>
<li>F number 2.06</li>
<li>Field of View 9.38</li>
<li>Image height 21.64</li>
<li>Lens total length 159.05</li>
<li>BF 53.99</li>
<li>Even when there is vignetting, a good blurred image at all angle of view</li>
</ul>
<p>We have not heard anything regarding a new EF 135mm f/2L lens coming in 2017, but we’ll obviously let you know if we do.</p>
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