Photokinesis is an ability to control the light. One with this ability is able to light up the darkness wherever they go, and can manipulate the light to mask themselves from visibility.
If you are creative, you can manipulate the light to the point where you are able to create holograms wherever you like. Photokinesis cannot, however, be used to light the light of a dark fifi or a wielder of Erebokinesis, which in turn cannot put out the light of a light fifi or a wielder of Photokinesis. Only natural darkness is able to be lit up.