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<em>Sigma 24-70mm f/2.8 DG OS HSM | Art & Sigma 100-400mm f/5-6.3 DG OS HSM | Contemporary for Sigma / Canon / Nikon </em></p>
<p><strong>Benefit of this firmware update </strong></p>
<ul>
<li>It has corrected the phenomenon that the Manual Override (MO) function will be disabled after adjusting the settings of focus mode switch on SIGMA Optimization Pro (Macintosh ver.).</li>
</ul>
<p><strong>Sigma Mount Converter MC-11 SA-E / EF-E </strong></p>
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<p><strong>Benefit of this firmware update </strong></p>
<ul>
<li>It has corrected the phenomenon which may occur with the combination of SIGMA MOUNT CONVERTER MC-11 and some of SIGMA’s interchangeable zoom lenses on Sony a9 (ILCE-9) that when using AF-S mode and shooting in telephoto range, it could occasionally display the shot as in focus, although it may not be correctly locked on the subject.</li>
<li>It has become compatible with the SIGMA 24-70mm F2.8 DG OS HSM | Art for SIGMA (Firmware Ver.1.02), CANON (Firmware Ver.1.02), as well as the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for SIGMA (Firmware Ver.1.02) and CANON (Firmware Ver1.03).</li>
</ul>
<p>The above firmware updates are available for installation in <a href="https://www.sigma-global.com/en/download/lenses/sigma-optimization-pro/" target="_blank" rel="nofollow noopener">Sigma Optimization Pro</a> via the <a href="http://www.the-digital-picture.com/Reviews/Sigma-Dock.aspx" target="_blank" rel="noopener">Sigma USB Dock</a>.</p>
<p>In addition to firmware updates detailed above, Sigma announced today that they are now offering a rear filter holder installation service for the otherwise incompatibile-with-front-filters 14mm f/1.8 DG HSM Art lens.</p>
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