<https://www.canonrumors.com/forum/threads/sigma-will-announce-a-100-400mm-f5-6-3-dg-dn-os-shortly.38665/>
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"2020-06-26T04:48:56+00:00"^^<http://schema.org/Date>
<https://www.canonrumors.com/forum/threads/sigma-will-announce-a-100-400mm-f5-6-3-dg-dn-os-shortly.38665/#post-836354>