And even staff at the Lace Market tourist attraction – who are used to regular "ghost" sightings – think there could be something in it.
It was only when flicking through his archives this week that he noticed the eerie figure and sent it to museum staff.
Deputy marketing Faye Rollinson said: "I couldn't see anything at first but I wasn't looking in the right place.
"Matty sent it again with a circle around it and I could see a face.
"I was looking on my so I zoomed in and you can see what looks like an old person's face with sunken eye sockets and grey hair."
Ms Rollinson said the museum receives up to 10 photographs a year from visitors who believe they have spotted a ghost.
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