Don't be afraid of the dark.
Credit: Steve Winter

Cute and cuddly will always win you Facebook likes, but having the courage to face more challenging and difficult topics often results in more engaging work. "Sometimes images that make you feel uncomfortable actually catch your eye and can make a difference," Winter says. "This one funded a project for the dwindling population of bears of Kamchatka, in far-east Russia. Five dead bears, all female, which were killed during a guaranteed hunt. The legs, which are walking away, summarize what has been happening."