Rack focus

The prompt

Scene paragraph Night in a long hospital corridor, photoreal medical thriller, 35mm film look. A young Filipina nurse with her black hair in a bun, wearing a white nurse's uniform, stands behind a nurses' station at the far end of the corridor, in the middle of the frame looking toward the lens, holding a paper chart. Behind her the corridor runs straight back to a distant vanishing point, rows of doors and ceiling lights receding. A cream rotary phone sits on the counter in the near foreground at lower left. Cool fluorescent light.

Medium-wide shot at eye level with a shallow depth of field, the camera locked on a tripod. 0–2s: the rotary phone in the foreground is in crisp focus and she is a soft blur behind it. 2–4s: the focus begins to shift from the phone toward her. 4–6s: the phone melts into a soft blur and she comes into sharp focus. 6–8s: she looks up from the chart toward the phone, crisp and clear. Throughout: the camera position and framing stay fixed, only the focus changes, one continuous take.