When I started shooting photos as a Marine Corps combat correspondent back in 1994, my camera of choice as an old Nikon FE -- it was straight out of the '70s, entirely manual, and captured images on ... wait, what was that stuff called again? ... oh right. Film. These days, I shoot exclusively with my iPhone, with light (and occasionally not-so-light) editing via Photoshop or Instagram. My favorite thing about Instagram is that in a lot of ways, it is a new window into what each of us sees in our world, and how we see it.