Whenever possible, I avoid writing about camera gear. The photographer takes the picture, not the equipment. Few people care what kind of typewriter Hemingway used. IN AFGHANISTAN
A Year at War James Dao and Damon Winter continue following the men and women of First Battalion, 87th Infantry of the 10th Mountain Division.

But it happens that Mr. Winter quickly realized — after trying a few shots — that his iPhone would be an effective way to capture the day-to-day trials of the First Battalion, 87th Infantry of the 10th Mountain Division in northern Afghanistan. “Composing with the iPhone is more casual and less deliberate,” Mr. Winter said. “And the soldiers often take photos of each other with their phones, so they were more comfortable than if I had my regular camera.”