Rembrandt lighting is similar to loop lighting, but with the light source moved higher and further left or right of the face. It creates a strong pattern characterized by a small triangle of light that appears under the eye on the shadow side of the face, along with a nose shadow that nearly extends to the corner of the mouth. This is not an all-purpose lighting and is probably best reserved for character studies and moody fashion work.
Rembrandt lighting results in a more dramatic visual than the use of loop light. Shadows appear under the eyes of the subject and accompany the nose shadow. Rembrandt lighting is achieved by placing the light higher and further from the subject than in the case of loop lighting set-ups. The use of Rembrandt lighting results in moody, somewhat melancholic photographs. It is perfect for a more dramatic effect and an emotional portrait.