Compressed backups work only with backup sets, not image copies.

压缩的备份只对备份集有效，对映像副本无效。

youdao

The Hendrix poster will be limited to a run of 5000 copies and features an Ira Rosen image of the guitarist browsing for music in a New England record store.

FORBES: Stone Free: New Jimi Hendrix Music Released, Streaming Free on NPR

The film was processed and when the image got to the AP office in New York, they all made copies for themselves to show people but then they pulled it off the wire.

BBC: NEWS | Middle East | Picture power: Death of an Iraqi soldier

Instead of easily manipulating an image to thoroughly examine the breast's interior, radiologists will have to print out more hard copies.

FORBES: Fact and Comment