From the winter of 2010 through the spring of 2011, I suffered from an ailment that entailed some fairly excuriating physical therapy.

Since my ability to drive was impaired, I ended up taking a lot of subway rides to the medical center. On these almost daily trips, I started to take handheld, slow-shutter iPhone shots of the stations and the trains. At first, it was simply to take my mind off the discomfort, but soon I found that an iPhoneography project had accreted around the original intent.

Though I’ve already published many of these shots, they were always–or at least for a very long time–seen by me as glimpses of the work-in-progress that has become this video . . .