1/1000th at F4.0, ISO 400 (170 mm).
While we're on the topic of photographing people from behind, here are a couple of others that I've been meaning to post.
1/400th at F5.0, ISO 400 (32mm).
I love this backpack. She looks like an urban explorer.
*If you like the photos in this post please help me spread the word by sharing. Thanks.