Motion... The subject may be moving, just as the camera can be... Sometimes they both move. Is it really so important that all is "clear" ? Every dogma must be questioned ! The blurry image has its own poetry ; the fact that the image is no longer immediately "recognizable", gives it a more universal appeal and lets the photographer and the viewer create their own personal interpretation.
Impressions from a tunnel of light, am I still in this world ?
Mysterious people...
Situations that assume human intervention...
This way of shooting elevates the camera from a pure registrar to a very special painting tool. "Painting with light" is more than just recording.