An Oregon man accused of sexually abusing his young children and sharing the photos on the Internet has been sentenced to 50 years in prison.

Mark Hoffman, 35, was sentenced on Monday in U.S. District Court on two counts of production of child pornography. Hoffman reached a plea deal in April.

Judge Robert E. Jones said it was one of the worst cases he had ever seen in his 47 years of practice. Back in April, the foster mother for two of the three children, Kymberlee Lake, identified herself as a physician and told the judge in a statement on behalf of the victims the abuse was "far worse than most professionals have ever seen."

One child was only 2 years old when the abuse began.