Example of artefacting, visible here as red spots.
<ul><li><a href="//commons.wikimedia.org/wiki/File:AduC_002_Voltaire_(1694-1778).JPG" title="File:AduC 002 Voltaire (1694-1778).JPG">AduC_002_Voltaire_(1694-1778).JPG</a>: (Upload User:Havang(nl))</li>
<li>derivative work: <kbd style="white-space:nowrap"> -- <b style="font:1.1em cursive;text-shadow:#300 0 0 2px,#600 0 0 .2em"><a href="//commons.wikimedia.org/wiki/User:Perhelion" title="User:Perhelion"><b style="color:#f96"><i><big>π</big>ϵρ</i>ήλιο</b></a><a href="//commons.wikimedia.org/wiki/User_talk:Perhelion" title="User talk:Perhelion"><small class="error">℗</small></a></b></kbd></li></ul>
2011-07-15 01:20
<ul><li><a href="//commons.wikimedia.org/wiki/File:AduC_002_Voltaire_(1694-1778).JPG" title="File:AduC 002 Voltaire (1694-1778).JPG">AduC_002_Voltaire_(1694-1778).JPG</a></li></ul>