<p><code>focus-stack [options ...] file1.jpg file2.jpg ...</code></p>

<h2 id="DESCRIPTION">DESCRIPTION</h2>

<p><strong>focus-stack</strong> takes a set of photos taken at different focus settings and
combines them into one, selecting the sharpest source image for each
pixel position. This is commonly called extended depth of field, or
focus stacking. Typical use is for microscope photography where it is
difficult to obtain large enough depth of field to cover the whole
subject.</p>

<p>Usually good result