Capture a confident businessman standing outside a modern glass building, smiling as he talks on his phone. Use a 50mm f/1.8 lens with an aperture of f/2.8 to achieve a shallow depth of field, focusing sharply on the subject while softly blurring the urban backdrop. Set the ISO to 200 and shutter speed to 1/500s to ensure clarity in bright daylight. The businessman should be dressed in a tailored dark suit, with a crisp white shirt and a subtle tie, exuding professionalism. Position him slightly angled towards the camera, with a warm smile, holding the phone to his ear to convey engagement and approachability. His hair should be short and well-groomed, and his beard neatly trimmed. Utilize natural light during the golden hour for soft illumination, with reflections from the glass building creating interesting light patterns. Frame the subject slightly off-center, allowing the modern architecture and reflections of greenery to enhance the dynamic city atmosphere. In post-production, apply color grading to enhance vibrancy, add a subtle vignette effect to focus on the subject, and ensure slight sharpening for clarity.