I borrowed the title, which is German for "motion study," from the famed Rudolf Koppitz image, even though the model's gesture is almost the complete opposite. Somehow it expresses a similar mood and emotion to me. The model is Jordan Daniele.
Shot handheld with Canon 5DII and 24-105 L Lens. Best "kit" lens ever. Light from window behind and to my right. Adobe Lightroom 3 was used for conversion to greyscale.