One Master Reference. Five different identities. The background, lighting, framing, gaze, wardrobe, and color treatment stayed locked. Only the face changed. I used Nano Banana Pro and returned to the original reference for every generation to prevent visual drift. Link : https://app.notion.com/p/noahelhadedy/Red-Light-Portrait-Professional-AI-Consistency-Guide-3b4088e72dd481baac01e0c91edfc276?source=copy_link