Because of copyright law in a number of countries, there are relatively few existing images publicly available for use in Wikipedia. Photographs, drawings and other images created by Wikipedia editors thus fill a needed role. Wikipedia editors are encouraged to take photographs or draw pictures or diagrams and upload them, releasing them under the GFDL or another free license, to illustrate articles. Original images created by a Wikipedia editor are not, as a class, considered original research – as long as they do not illustrate or introduce unpublished ideas or arguments, the core reason behind the NOR policy.
Images that constitute original research in any way are not allowed. It is not acceptable for an editor to use photo manipulation to try to distort the facts or position being illustrated by a contributed photo. Manipulated images should be prominently noted as such. Any image that is found to have manipulation that materially affects its encyclopedic value should be deleted from the article and a note should be posted at the file page informing users that the file contains Original Research. It is also suggested that the file be posted to Wikipedia:Files for deletion.
Image captions are subject to this policy no less than statements in the main text of the article. Great care should be taken not to introduce original research into an article when captioning images.
