Nelson Walker graduated from Brown University before receiving his MFA in Film Directing from Columbia University. His first film, iThemba | Hope, made in collaboration with Keefe Murren, was about an HIV+ choir from South Africa and aired on Sundance Channel. Nelson's cinematography has appeared in many highly lauded projects including The Fight (Edgeline Films), Chef Flynn (Dir. Cameron Yates), Dior and I (Dir. Frédéric Tcheng), Making a Murderer (Netflix), Iris (Maysles Films), Watchers of the Sky (Propeller Films), and The Gates (HBO). He serves as Chairman of the board of Maysles Documentary Center.