The equipment matters far less than the subject-and the skill of the photographer, as Damon Winter proves in his new series for the Lens.
As the Times's James Estrin notes, the subjects and the images themselves are far more important than the equipment used to capture them. However, when the equipment in question is a camera phone, it's worth mentioning. Winter says soldiers seemed more comfortable when he shot them with his iPhone than with a regular camera; that they often use their phones to photograph each other might account for that relaxed feeling.
Equipment aside, the end results, as you can see from this slideshow, are elegant and inspired.