Demotix, which launched in 2009, receives contributions from photojournalists across the globe and sells them on to media buyers. It claims have an archive of more than 400,000 news images.
As part of the new partnership, Corbis, whose headquarters are in the US, will be able to pick a selection of these images to be distributed through its website. The first images from Demotix will be available on the site in the next few weeks.
Today's announcement follows Demotix's distribution deal with the Press Association, announced last month.
Speaking to Journalism.co.uk, Demotix CEO Turi Munthe said Corbis "is the global partner we wanted and need", on a distribution level.
"Their 200-odd salespeople massively augment our offering from a sales perspective," he added.
"Our in-house focus can now really be on developing new products for our contributors and our clients, and turning Demotix into the future of news."
A spokesman for Corbis Images said the new partnership will help to complement its current distribution deals with breaking news outlets such as Reuters and the European Pressphoto Agency (EPA).
Anil Ramchand, Corbis' director of news, sports and entertainment said in a release: "As some providers of news photography cut back on their geographic coverage, Corbis will now have faster access to quality photojournalism from a community of thousands of local photographers around the world, increasingly making Corbis a destination for news media looking for exceptional breaking news images."
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