I was in Philadelphia most of this week. I've learned how to code in Objective C and wrote my very first iOS app. For a few years, I've been in the habit of keeping my DSLR camera with me. I walked around within a few blocks of Chestnut and 4th Street looking for something interesting to capture. I wish I had brought the tripod out of the car. A tripod is a must when doing HDR photography, but I was determined to get something. Most of what I shot didn't work. There was just too much movement of the camera between exposures. This one was all that was decent, and I used a railing to brace the camera. This image is a three exposure HDR, combined in Nik Software's HDR Efex Pro with some colour adjustment in Adobe Lightroom 4.