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<p><strong>Various reports say it is

</strong>We’ve heard from a few people that the EF 70-200 f/2.8L is in the process of being discontinued.</p>
<p>A few people have said they have attempted to get broken lenses fixed and have been told by Canon USA that parts for the repair are no longer available and will not be in the future either.</p>
<p>Another report says an EF 70-200 f/2.8L that was in disrepair was replaced with a refurbished EF 70-200 f/2.8L IS II at no extra cost. However, don’t go breaking your lenses, as this may have been a one off.</p>
<p>I would imagine the current stock of the lens at retailers will probably be the last of them. I’ve heard nothing about a replacement for the lens, even though I do think there is a place for Non-IS lenses such as this one.</p>
<p><strong><a href="http://www.bhphotovideo.com/c/product/91680-USA/Canon_2569A004_70_200mm_f_2_8L_USM_Autofocus.html/bi/2466/kbid/3296" target="_blank">Canon EF 70-200 f/2.8L at B&H Photo $1299</a></strong></p>
<p><strong><span style="color: #ff0000;">c</span>r</strong></p>

<div name="googleone_share_1" style="position:relative;z-index:5;clear:right; float:right; margin-left:10px; margin-top:10px;"><g:plusone size="tall" count="1" href="http://www.canonrumors.com/2013/06/patent-ef-100-400-f4-5-5-6l-is/"></g:plusone></div><div id="fb_share_1" style="float:right; margin-left:10px; margin-top:10px;"><a name="fb_share" type="box_count" share_url="http://www.canonrumors.com/2013/06/patent-ef-100-400-f4-5-5-6l-is/" href="http://www.facebook.com/sharer.php">Share</a></div><div><script src="http://static.ak.fbcdn.net/connect.php/js/FB.Share" type="text/javascript"></script></div><div style="clear:right; float:right; margin-left:10px; margin-top:10px;"><a href="https://twitter.com/share" class="twitter-share-button" data-count="vertical" data-url="http://www.canonrumors.com/2013/06/patent-ef-100-400-f4-5-5-6l-is/">Tweet</a></div>
<p><strong>Another patent

</strong>This is probably the third separate patent I have seen for an EF 100-400 f/4.5-5.6L IS over the last 24 months. A zoom ring version does exist in the wild. We’re told the push/pull is finished and we’ll get a properly sealed 100-400. The cost will be north of $2500 USD and we could finally see it announced before the end of the year. Also appearing in the patent is a 70-300.</p>
<p><strong>The breakdown below is Google translated</strong></p>
<ul>
<li><span>Patent Publication No. 2013-105053</span>
<ul>
<li><span>Publication date 2013.5.30</span></li>
<li><span>Filing date 2011.11.15</span></li>
</ul>
</li>
<li><span>Example 1</span>
<ul>
<li><span>Zoom ratio 4.01</span></li>
<li><span>Focal length f = 72.48-135.49-290.86mm</span></li>
<li><span>Fno. 4.58-4.94-5.85</span></li>
<li><span>Half angle ω = 16.62-9.07-4.25 °</span></li>
<li><span>Image height Y = 21.64mm</span></li>
<li><span>143.42-175.48-201.87mm overall length of the lens</span></li>
<li><span>BF 39.98mm</span></li>
</ul>
</li>
<li><span>Example 3</span>
<ul>
<li><span>Zoom ratio 3.75</span></li>
<li><span>Focal length f = 104.16-166.66-391.00mm</span></li>
<li><span>Fno. 4.60-5.20-5.80</span></li>
<li><span>Half angle ω = 11.73-7.40-3.17 °</span></li>
<li><span>Image height Y = 21.64mm</span></li>
<li><span>221.48-252.31-300.68mm overall length of the lens</span></li>
<li><span>BF 70.65-87.69-113.37mm</span></li>
</ul>
</li>
<li><span>Canon</span><span> patent</span>
<ul>
<li><span>I want to put in the first group the anomalous dispersion optical element</span></li>
<li><span>It is possible correction and lateral chromatic axial chromatic aberration, but spherical aberration of color and field curvature occurs</span></li>
<li><span>By optimizing the placement, the correction and field curvature, the spherical aberration of the color of g-line</span></li>
</ul>
</li>
</ul>
<p><strong>Source: [<a href="http://egami.blog.so-net.ne.jp/2013-06-13" target="_blank">EG</a>]</strong></p>
<p><strong><span style="color: #ff0000;">c</span>r</strong></p>