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A patent showing three different optical formulas for APS-C sensor cameras has appeared.</p>
<p><a href="https://www.canonnews.com/canon-patent-application-aps-c-compact-camera-lenses">According to Canon News</a>, this patent is missing some good information that would help narrow down what these embodiments are for.</p>
<p><strong>The 3 embodiments:</strong></p>
<ul>
<li>15-45mm f/2.8-5.6</li>
<li>15-45mm f/2.0-5.0</li>
<li>15-60mm f/2.0-5.0</li>
</ul>
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<p><strong>From Canon News:</strong></p>
<blockquote><p>Our assumption with this patent application is that these lenses are for APS-C given the focal lengths of the lenses, however in this patent application, unlike most, the half image width is curiously missing from the patent application. This could be for a mirrorless EF-M camera, or even a APS-C compact camera. It’s hard to tell without the image half width. The patent description seems to be talking more about a compact camera.</p></blockquote>
<p>It looks like the 15-60mm f/2.0-5.0 has an extremely short back focus suggesting it may be for a PowerShot application and not for mirrorless or APS-C DSLRs.</p>
<p>We wouldn’t be shocked to see a new EF-M 15-45mm lens announced alongside the EOS M5 Mark II, as we’ve been told that a new kit lens of some kind is on the way.</p>
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