This is a piece of barbed wire fence that covers the perimeter of a field that is on a land right by my house. It was very dark when I took this so I used my mini tripod and used the following camera settings:
F-stop: f/10, ISO-800, focal length: 55mm, exposure time: 5seconds with manual focus.
I used a 2 seconds shutter delay which gave me time to use the torch on my phone to light up the metal spikes.
Edited in Adobe Photoshop CS5
Sony NEX5 with 18-55mm lens & Hoya UV filter
(taken using mini tripod)