A man who accessed more than 1,500 indecent images of youngsters on the internet has been jailed for 10 months.
Roy Widdowson was caught after an associate found some images stored on CDs and DVDs of naked girls aged between 10 and 12 years.
The 65-year-old, of Hinckley Road, Leicester, admitted making indecent images of children, by downloading them.
They relate to 1,375 images, including 18 movies, at level one, 170 images, including two movies, at level two, 78 images at level three, 188 at level four, and 24 in the most serious category, level five.
Sentencing him at Leicester Crown Court, Judge Philip Head said: "Your offending spanned a nine-year period.
"It ended on February 28 when you moved out of a hostel and told an acquaintance he could keep what he found.
"He found CDs and DVDs of girls exposing themselves and alerted the police who then searched your computer.
"A significant proportion of the victims shown were 10 years old."
The judge said there were also images of even younger children being abused.
He added: "The impact on the victims, for the rest of their lives, of being treated in this way cannot be imagined.
"People like you, who download and use them, keep this trade going.
"It's said you've had unhappy emotional experiences, which led you into these offences.
"However, the material is so serious and of such a quantity, only custody is justified, in the public interest."
Carl Gaskell, mitigating, said Widdowson was willing to address his offending and regretted his actions.
Judge Head imposed a sexual offences prevention order, enabling the authorities to monitor and restrict his future computer use, and also banning him from unsupervised contact with females under 16.
He will also have to enlist on a sex offenders' register for 10 years.