Using the person in the input photo, create an ultra-realistic 8K corporate headshot.

Identity: preserve their exact face and identity, plus their age, gender, ethnicity, hairstyle and expression; none of their distinctive facial features may be altered.
Clothing: swap the outfit for a crisp white shirt under a tailored navy blue wool business suit.
Backdrop: a clean dark gray studio background with a soft gradient of light at the center and a gentle vignette; no objects.
Camera: a Sony A7III with an 85mm f/1.4 lens, studio portrait, portrait orientation, shallow depth of field, the subject sharp and the background softly blurred.
Lighting: soft three-point lighting, gentle shadows, a subtle rim light on the hair and shoulders.
Skin and eyes: natural skin texture with visible pores and fine detail, no plastic-looking smoothing; bright, natural catchlights in the eyes.
Result: a high-end studio portrait ready to use as a LinkedIn profile photo.