Sigma APO 150-500mm F5-6.3 DG OS HSM lens, fully retracted (i.e. at 150 mm)
<a href="//commons.wikimedia.org/wiki/User:Yerpo" title="User:Yerpo">Yerpo</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>