Judge Stephen Earl told him: “These children are harmed.
“The sort of vile trade in these sort of images can only continue when there are people like yourself who trade in it, ie to make and download these images for their own sexual gratification.
“It’s my view you represent a significant risk of serious harm to children in the future.”
The court heard Duthie had been locked up in July 2011 for four rapes of a child under 16, three offences of sexual activity with a child under 13 and three of incitement of a child under 13. Those offences occurred between 2005 and 2008.
In July last year police went to his last known address, his mother’s home, where he had said he was living. It became apparent he was not living there.