PHILADELPHIA (AP) — A man who produced thousands of images of himself sexually abusing children as young as 3 months old was convicted Wednesday on more than 50 child pornography charges.

Jurors spent more than a week reviewing excruciating video evidence in the case of John Jackey Worman, 41, of the Philadelphia suburb of Colwyn. The jury announced its verdict after deliberating for about half a day.

Worman, who showed little reaction to the verdict, faces a maximum sentence of 15 to 30 years in prison on each count. Sentencing is scheduled for Dec. 18; he has been in custody since February 2006.