<div name="googleone_share_1" style="position:relative;z-index:5;float: right; /*margin: 70px 0 0 0;*/ top:70px; right:120px; width:0;"><g:plusone size="tall" count="1" href="http://www.canonrumors.com/?p=12288"></g:plusone></div><div style="float: right; margin:0 0 70px 70px;"><a href="https://twitter.com/share" class="twitter-share-button" data-count="vertical" data-url="http://www.canonrumors.com/?p=12288">Tweet</a></div>
<strong>New Canon 50 f/1.2


</strong>A new patent has surfaced that shows a new design for an EF 50 f/1.2 lens. The current 50L has somewhat of a mixed reputation due to some focus shift.</p>
<p>Also shown is potentially a 50 f/2 for a full frame mirrorless camera as it mentions a 22mm back focus distance. Keith at [<a href="http://www.northlight-images.co.uk/Canon_new_lenses.html" target="_blank">NL</a>] is reading the patent that way, and that interpretation looks plausible. If anyone is better at reading and interpreting the patent than we are, please let us know.</p>
<ul>
<li><span>Example 1</span>
<ul>
<li><span>Focal length f = 51.70mm</span></li>
<li><span>Fno. 1.25</span></li>
<li><span>Half angle of view ω = 22.71 °</span></li>
<li><span>Image height 21.64mm</span></li>
<li><span>105.65mm length lens</span></li>
<li><span>BF 40.00mm</span></li>
<li><span>Nine 6 groups lens configuration</span></li>
<li><span>One one aspherical surface</span></li>
<li><span>Maximum effective diameter 45.16mm</span></li>
</ul>
</li>
<li><span>Example 4</span>
<ul>
<li>Focal length f = 50.00mm</li>
<li>Fno. 2.06</li>
<li>Half angle of 23.40mm</li>
<li>Image height 21.64mm</li>
<li>Length 72.62mm lens</li>
<li>BF 28.86mm</li>
<li>Eight four group lens configuration</li>
<li>No aspherical</li>
<li>Maximum effective diameter 33.34mm</li>
</ul>
</li>
</ul>
<p><strong>Source: [<a href="http://egami.blog.so-net.ne.jp/2012-12-16" target="_blank">EG</a>] via [<a href="http://www.northlight-images.co.uk/Canon_new_lenses.html" target="_blank">NL</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;float: right; /*margin: 70px 0 0 0;*/ top:70px; right:120px; width:0;"><g:plusone size="tall" count="1" href="http://www.canonrumors.com/?p=12284"></g:plusone></div><div style="float: right; margin:0 0 70px 70px;"><a href="https://twitter.com/share" class="twitter-share-button" data-count="vertical" data-url="http://www.canonrumors.com/?p=12284">Tweet</a></div>
<strong>400mm Everywhere!


</strong>I have received various bits of info over the last few months about Canon’s plans in the 400mm range. There is lots of desire for a new 400 f/5.6L and 100-400, and both may finally be getting an update. It feels like the 100-400 has been in the update cycle forever, but judging by how many of these things Canon sells, I can see why they’ve been in no rush to have it replaced.</p>
<p>Below are lenses that are apparently in prototype form and are on tap to be announced in 2013.</p>
<ul>
<li>EF 400 f/5.6L IS (Highly desired)</li>
<li>EF 400 f/4L IS (Not DO)</li>
<li>EF 100-400 f/4-5.6L IS (Not push-pull & patents exists)</li>
<li>EF 200-400 f/4L IS 1.4x (Long known about)</li>
</ul>
<p>There seems to be a theme developing with Canon offering more options in the same focal length range. Best guess pricing will also have a pretty wide range, from a $2000 400 f/5.6L IS up to the $11,000 EF 200-400 f/4L IS 1.4x.</p>
<p><strong><span style="color: #ff0000;">c</span>r</strong></p>