A photo that has been used as a photo reference by an artist when creating a picture. The result of using such references can range from detailed recreations of the photographs to simple copied poses, expressions, or situations.
This tag can be used both if the photo reference is uploaded individually, or if it is shown side-by-side with its 2d counterpart. Reference photos should be parented to their 2d counterparts.
This tag is for the photos themselves, not for images based on reference photos.