Focus on a person walking down a city street at night, their path illuminated by the soft bokeh of streetlights. Use a telephoto lens, such as the Sony FE 70-200mm f/2.8 GM OSS, to create a shallow depth of field and beautiful bokeh effects. A wide aperture will further emphasize the dreamy ambiance. For a 4K wallpaper, enhance the sharpness and clarity of the central figure, while maintaining the soft, ethereal quality of the cityscape bokeh, creating a captivating and unique urban night scene.