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From Sigma</p>
<p>We have found that Live View Mode cannot be used on the EOS 8000D (Rebel T6s / 760D) and EOS Kiss X8i (Rebel T6i / 750D) released on April 17th 2015 by Canon Inc. with some of SIGMA’s Canon mount interchangeable lenses. For those who own the lenses, we are going to provide a firmware update free of charge.</p>
<p><strong>Phenomenon</strong>
When the Live View Mode button on the camera body is pressed, the operation stops without displaying images on the rear LCD monitor.</p>
<p>Products and Serial Numbers that require the firmware update</p>
<p><strong>Current models</strong></p>
<ul>
<li>17-50mm F2.8 EX DC OS HSM – No. 12651501 or later</li>
<li>18-250mm F3.5-6.3 DC MACRO OS HSM – No. 13044001 or later</li>
<li>APO 70-200mm F2.8 EX DG OS HSM – No. 12713001 or later</li>
<li>APO 50-500mm F4.5-6.3 DG OS HSM – No. 12902001 or later</li>
<li>120-300mm F2.8 DG OS HSM | Sports – No. 50064494~ 50347793</li>
<li>APO 150-500mm F5-6.3 DG OS HSM – No. 12669751 or later</li>
</ul>
<p><strong>Discontinued models</strong></p>
<ul>
<li>17-70mm F2.8-4 DC MACRO OS HSM – No. 12665001 or later</li>
<li>18-200mm F3.5-6.3?DC OS HSM – No. 12851001 or later</li>
<li>18-250mm F3.5-6.3 DC OS HSM – No. 12656101 or later</li>
<li>APO 50-150mmF2.8 EX DC OS HSM – No. 12839001 or later</li>
<li>APO 120-300mm F2.8 EX DG OS HSM – No. 12676440 or later</li>
<li>APO 120-400mm F4.5-5.6 DG OS HSM – No. 12971601 or later</li>
</ul>
<p><!--more--></p>
<p>* For lenses that have been repaired in the past, they may require the firmware update even when the serial number is not listed above. In case the mentioned camera does not display images on the rear LCD monitor when Live View Mode button on the camera body is pressed, the firmware update is necessary.</p>
<p>We will make a further announcement when the firmware update becomes available.</p>
<p>For those who own the SIGMA USB DOCK, it will be possible to update the firmware of 120-300mm F2.8 DG OS HSM | Sports through SIGMA Optimization Pro. We will also announce its availability when the update is available.</p>
<p>* If you use the SIGMA USB DOCK with 120-300mm F2.8 DG OS HSM | Sports, even when the lens does not require the update, its firmware will be updated to the new version.</p>
<p>* For those who use APO TELE CONVERTER 1.4x EX DG or APO TELE CONVERTER 2x EX DG with the 120-300mm F2.8 DG OS HSM | Sports, please contact your nearest authorized subsidiary / distributor of SIGMA for further support.</p>
<p>Source: [<a href="http://www.the-digital-picture.com/News/News-Post.aspx?News=14935" target="_blank">The-Digital-Picture</a>]</p>
