The more ghostly photo

A photo taken at a Scottish castle gets a prize for "most ghostly".

A competition to choose the picture more "ghost" ended with the victory of a photograph taken in 2008 in a Scottish castle. In the snapshot appears the figure of a man (or woman) looking through a window of the fortress of Tantallon. Three photographers experts have concluded, after analyzing the picture, "it is authentic and has not been manipulated." The author of the picture is called Christopher Aitchison. "I did not realize that someone was looking out the window, only when I got home and looked closely at the picture I realized that someone was there," says the author. The snapshot can be authentic, it does not imply that the human senses that corresponds to a "ghost".

In my opinion, I think that this photo is a authentic photo, but, Is it the more ghostly photo? What do you think about it?