Taken on the London Underground, at a rather high ISO, hence the noise.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/56694135@N00">Jason</a> from London
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/jasoon/13960949/">On The Right</a>