Equipment for a 3:1 magnification macro (reversed lens method): An SLR camera (<a href="//commons.wikimedia.org/wiki/Category:Pentax_K-7" title="Category:Pentax K-7">Pentax K-7</a>), a telephoto lens of 90 mm focal length (Tamron SP AF 90 mm F/2.8 Di MACRO 1:1), a wide-angle lens of 28 mm (smc Pentax-M 28 mm F/2.8), and a coupling ring fitting for the two filter threads (49/55 mm). More information at <a href="//commons.wikimedia.org/wiki/File:MacroPlusRetrolens.jpg" title="File:MacroPlusRetrolens.jpg">File:MacroPlusRetrolens.jpg</a>.
<a href="//commons.wikimedia.org/wiki/User:Fice" title="User:Fice">Christian Fischer</a>
CC BY-SA 3.0
<p><span class="int-own-work" lang="en">Own work</span>.<br></p>
<i>Picture taken with:</i> <a href="//commons.wikimedia.org/wiki/File:PentaxK100D_3.jpg" class="image"><img alt="PentaxK100D 3.jpg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/f/fc/PentaxK100D_3.jpg/50px-PentaxK100D_3.jpg" decoding="async" width="50" height="33" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/f/fc/PentaxK100D_3.jpg/75px-PentaxK100D_3.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/f/fc/PentaxK100D_3.jpg/100px-PentaxK100D_3.jpg 2x" data-file-width="4672" data-file-height="3104"></a> + <a href="//commons.wikimedia.org/wiki/File:PentaxZoomLens18-55WR.jpg" class="image"><img alt="PentaxZoomLens18-55WR.jpg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/5/56/PentaxZoomLens18-55WR.jpg/50px-PentaxZoomLens18-55WR.jpg" decoding="async" width="50" height="35" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/5/56/PentaxZoomLens18-55WR.jpg/75px-PentaxZoomLens18-55WR.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/5/56/PentaxZoomLens18-55WR.jpg/100px-PentaxZoomLens18-55WR.jpg 2x" data-file-width="2000" data-file-height="1405"></a> (at 35 mm) + tripod.