When Did Director Zack Snyder Know He'd Found His Man Of Steel?

When Did Director Zack Snyder Know He'd Found His Man Of Steel?

Director Zack Snyder chats with Access about making “Man of Steel.” Why was this movie more daunting for him to make than other films he’s directed? Plus, when did he realize that Henry Cavill was the right actor to portray Superman? And, why was it important to make Superman relatable?