Jason Logan is constantly looking at the ground.
"What I like to do is just walk really slowly," he says, eyes down. He's in a dusty, chain-link fence-lined alley in downtown Washington, D.C., with broken bottles and chunks of concrete scattered about. It's right off one of the city's major streets, and the buzz of traffic and wail of sirens fill the air.
"Part of what I do and part of what I'm excited by is just opening up people's eyes to what's going on at their feet," Logan says, scanning. "Kind of through the lens of: Could I make an ink out of that?"