Photo by Mr. Photo, via Flickr

Another interesting photo taken with an iPhone camera, this time of Grand Central Station in New York. Look closely and you can see the faint outlines of some passerby — an indication that this was likely taken with a long shutter release. And, yes, there’s an app for that — called SlowShutter (99 cents) — and it allows users to keep the shutter open for long stretches of time. It helps to have some kind of iPhone tripod, however.

To submit a photo for the Art of Transit, post it to Metro’s Flickr group, email it to sourcemetro@gmail.com or Tweet it to @metrolosangeles with an #artoftransit hashtag. Many of the photos we’ve featured can be seen in these galleries on Flickr.