Photographic memory does differ from eidetic memory, although a number of people use the terms interchangeably. Photographic memory allows people to recall visual information such as pages from books, magazines, and license plate numbers. Eidetic memory on the other hand involves senses other than vision. For example, then eidetic memory might include sounds, touch, taste, and smell. The distinction is still theoretical.
People who have a photographic memory will have total recall of what they have seen, while eidetic memories may include all or only several of the senses.
People with a photographic memory tend to be able to recall their memories for years in perfect detail and with an excellent sense of the daytime and year at which the information was input into their memory. Eidetic memories however tend not to be accompanied by an accurate timeline, and the visual component to these memories are often fuzzy because so many of the other senses are competing at the same time.