A Gainsborough man faces jail after he was caught with 600 indecent images of children on his computer.
Convicted paedophile David Honeyball, 56, was found with the images on his computer tower after police searched his home on May 24.
Lincoln Crown Court heard 147 of the images were at the lowest level of one, with 13 images at level two, 282 images at level three, 146 images at level four and 12 images at the most serious level of five. The age range of the children in the images varied between 2 and 13 years old, the court was told.
Andrew Scott, prosecuting, said most of the images were found in the recycling bin of the computer but a file sharing system was also present.
Mr Scott told the court chat logs showed Honeyball was "willing and able" to share images but it was impossible to be sure if this had occurred.
The logs also showed Honeyball's preference was for girls aged between 5 and 8.
When police arrested Honeyball, he said: "I've only been on it for about a month."
During interview, Honeyball admitted being aware of the file sharing system but claimed he only looked at images once to pass them on to the sex offenders unit at Lincolnshire Police.
The court heard Honeyball was jailed for three years at Snaresbrook Crown Court in 2000 for an indecent assault on a young child, and had also received a four-year prison sentence for previous sex offences.
Honeyball, of Turpin Close, Gainsborough, pleaded guilty to five charges of making indecent images of children, possessing 600 indecent images and one charge of possessing indecent images with a view to distribution.
He was remanded into custody by Judge Michael Heath and will be sentenced at Lincoln Crown Court in September.