feOffset filter

parameters:

dx: offset for x
dy: offset for y
in: first picture
result: name for raster created

Example: animation focussing on a picture
Using feGaussianBlur, feOffset, feSpecularLighting and feComposite to create 3D effect lighting

Example of code:

<defs>
<filter id="MyFilter" filterUnits="userSpaceOnUse" x="0" y="0" width="400" height="400">
<feImage id="source" xlink:href='#MyImage' result='pict1'/>
<feOffset dx="2" dy="2" in="pict1" result='pict2'/>
<feMerge>
<feMergeNode in="pict1"/>
<feMergeNode in="pict2"/>
</feMerge>
</filter>
<image id="MyImage" width='400' height='400' opacity='0.3' xlink:href='memo.svg'/>
</defs>
<use filter="url(#MyFilter)" x='0' y='0'/>

See this example