EPL1, 14-42 kit lens. This is a night shot, composition dictated by what gravestones I could place the camera on. If you look at the full size you will see a white arteftact dot in the path and there is one in the tree near the middle (I think the white thing to the right may be an actual object). I turned the camera while still on the same gravestone and took a shot in which there were no artefacts. I thought it might be something to do with the artificial light sources but today I took a shot today in daylight where there were no artifical lights and that too had 3 white artefact dots, not in the same place within the image. What's going on?