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UPDATE
The forum will be moving to a new domain in the near future (canonrumorsforum.com). I have turned off "read-only", but I will only leave the two forum nodes you see active for the time being. I don't know at this time how quickly the change will happen, but that will move at a good pace I am sure. ------------------------------------------------------------
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Another lens patent from Canon, this time for an EF-S 20mm f/2.8. Are we going to see a series of inexpensive EF-S primes in the future? This is pretty close to the 24mm f/2.8 STM pancake though.</p>
<p>Patent Publication No. 2015-111192 (Google Translated)</p>
<ul>
<li>Published 2015.6.18</li>
<li>Filing date 2013.12.6</li>
</ul>
<p>Example 3</p>
<ul>
<li>Focal length 20.65mm</li>
<li>Fno. 2.88</li>
<li>Half angle of view ω = 33.48 °</li>
<li>Image height Y = 13.66mm</li>
<li>Overall length of the lens 64.00mm</li>
<li>BF 35.30mm</li>
</ul>
<p>Canon patents</p>
<ul>
<li>Negative ShiboTadashi</li>
<li>The pay-out the entire</li>
</ul>
<p>We’ve changed how we source things, the source link is at the bottom right of this post if you want to read more.</p>