Comparison between a glasses lens without anti-reflective coating (top) and a lens with anti-reflective coating (bottom).  Note the reflection of the photographer in the top lens and the tinted reflection in the bottom.
<a href="//commons.wikimedia.org/wiki/User:Starwiz" class="mw-redirect" title="User:Starwiz">Justin Lebar</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>