![Tomonari Nishikawa](http://image.tmdb.org/t/p/w92/mT80BkuO49rYX4ED7B6L2k5d6uj.jpg)
Clear Blue Sky is the study of movements, colors, shapes and their relation to sound. Visual effects are created through, not a lens, but an adjustable slit, which was attached in front of the image sensor chip of a DV camcorder, while shooting at Washington Square, San Francisco.