Rights Managed, or RM, in photography

Photography

Photography is the art, science and practice of creating durable images by recording light or other electromagnetic radiation, either electronically by means of an image sensor or chemically by means of a light-sensitive material such as photographic film...

 and the stock photo industry, refers to a copyright

Copyright

Copyright is a legal concept, enacted by most governments, giving the creator of an original work exclusive rights to it, usually for a limited time...

 license which, if purchased by a user, allows the one time use of the photo as specified by the license. If the user wants to use the photo for other uses an additional license needs to be purchased. RM licences can be given on a non-exclusive or exclusive basis. In stock photography RM is one of the four common licenses or business models together with royalty-free, subscription and micro.