There is provided an image processing apparatus. A compositing unit performs compositing processing for compositing a first reflection characteristic data that shows a reflection characteristic of a first virtual light source on a predetermined object and a second reflection characteristic data that shows a reflection characteristic of a second virtual light source on the predetermined object. A generation unit generates a reflection component relating to an object that is included in an image, based on a reflection characteristic shown by composited reflection characteristic data obtained by the compositing processing. An addition unit adds the reflection component to the image.