Stock photo
A stock photo is literally a "stock photo." Supporting photos are placed with many texts, such as articles in magazines and on the Internet. Whereas in news articles these are usually actual photos of the event described, more general texts often use photos from an image database. Supporting stock photos are mainly intended to make clear what the article is about and to set certain mood around the article.
By using stock photos, an appropriate photo can be chosen immediately, instead of sending out a photographer yourself. This makes using stock photo materials faster and cheaper.
Image banks and stock agencies
Organizations can create their own collection of proprietary photo materials for their stock photography. More often, companies use imagery provided by specialized companies and websites.
These agencies act as resellers for photographers or own the rights to large quantities of photographic material themselves. Agreements can be made with both the photographer and the buyer of photographic material for exclusive use of the photos supplied.
Well-known providers of photographic material include Getty Images, iStock and Corbis
Paying royalties for stock photos
Royalties are generally payable for the use of third-party photos. The amount of this fee depends on the delivered quality of the photo, the frequency of use of the photo (one-time or unlimited), the method of publication (print or digital) and whether there is exclusive use.
There are also initiatives where stock material can be obtained for free. These are often websites where anyone can offer their photo material for free, or where photos can be purchased if you also contribute your own photo material.
