Flexible licenses: Feel free to choose one of the free licenses stated below. Usage is free of charge, but this image is not in the public domain. If you would like special permission to use, or license this image please contact me to negotiate terms.

Using online: For an example of reusing my images look at the right. It shows the name and a link to the used license.

Using in printed media: Whether near the image or in a separate image directory, it should be specified:
Photo: Rainer Knäpper, Free Art License (http://artlibre.org/licence/lal/en/), https://commons.wikimedia.org/wiki/File:Farblaengsfehler_DSC00247_wp.jpg

→ More information about reuse outside Wikimedia projects.