I used two wireless flashguns (nikon SB-800 + nikon SB-600) to achieve the result. The SB-800 was downstairs, positioned on a stative in front of the model and it was directed against a silver umbrella to provide a diffuse, but contrasting light. The second flash (SB-600) was put upstairs on a clamp and fixed on the handrail. It has a small round grid in order to concentrate its light on a precise spot and give a well defined shadow.
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