Earl Gary Chatterton was sentenced at Manukau District Court to four years and nine months in prison.
He admitted 26 charges of knowingly possessing and distributing child sexual abuse images, and one of blackmail.
Police say yesterday’s sentencing was the end of a joint investigation with the Department of Internal Affairs that began in 2018.
The investigation revealed Chatterton distributed, copied and was in possession of more than 80 objectionable image files, and attempted to blackmail several people for financial gain.