Change the Photo Background Without Changing You

{ "subject": "the person in the uploaded photo, kept EXACTLY as they are: the same face, the same expression, the same hair down to every strand along the outline, the same beard, the same glasses, the same clothes, the same pose, the same framing and the same size in the frame. Do not regenerate the person, do not change the expression, do not smooth the skin, do not slim them down, do not change the clothes and do not relight the face: the light already falling on them stays as it is. The only thing that changes is what is behind them. In the example, a Black man of about 45, with very short tightly coiled hair, a short graying beard and round tortoiseshell acetate glasses, smiling with his lips slightly parted and looking at the camera", "wardrobe": "medium-blue denim button-up shirt, worn open, with the sleeves rolled up to the forearm, over a plain white T-shirt; dark olive-green pants; no print, no writing and no logos", "action": "standing, with the body turned about 20 degrees toward the viewer's left and the face toward the camera, both hands in his pants pockets, shoulders relaxed", "scene": "the NEW background: a narrow stone street in an old European town in the late afternoon, with a cobblestone pavement that rises slightly toward the back; facades of pale stone and cream plaster with dark green wooden shutters and pots of red geraniums on the balconies; on the right, the empty wooden tables and chairs of a sidewalk café; potted plants by the doors; no people, no cars, no legible signs", "composition": "vertical photo in a 3:4 ratio, from the thigh up, with the bottom edge cutting just below the pants pockets; the person in the center, slightly to the right, taking up about 70% of the frame's width at shoulder height; the face takes up about 22% of the width, with the top of the hair at ~6% of the height and the eye line at ~19%; the street recedes into the distance on the viewer's left, behind the shoulder on that side, with the vanishing point at eye level", "camera": "the same camera as the uploaded photo: at chest height, about 2 meters away, with no tilt; a wide-aperture portrait lens, face and clothes sharp and the background blurred gradually, more blurred the farther away it is", "lighting": "the light in the uploaded photo is in charge: here it comes from the viewer's LEFT, warm and low, late-afternoon light, lighting the half of the face on the viewer's left and leaving the other half in soft shadow, with a glint on the rim of the glasses. The new background obeys that light: the low sun comes from the same side, the bright sky shows at the top left, the cobblestones catch the raking golden light and the facades on the right glow as they face the sun. The same warm color temperature on the person and on the background", "color_palette": "gold and cream of the sunlit facades, light blue of the sky, dark green of the shutters, red of the geraniums, honey gray of the cobblestones; denim blue, white and olive green in the clothes; warm skin; natural colors, no filter", "style": "realistic photo from a good phone, as if he had really stopped on that street for the picture; the person and the background look like the same instant, with no sign of a composite", "materials": "visible denim weave, cotton jersey of the T-shirt, coiled strands of the hair and beard, shiny acetate of the glasses, porous stone of the facades, worn cobblestones", "details": "three things prove the background was swapped without touching the person: the face, the clothes, the pose and the size in the frame are those of the uploaded photo; the lit side of the face is the same side the sun of the new background comes from (here, the viewer's left); and the outline of the hair and shoulders blends into the background with no halo, no bright edge and no hard cutout, with the background blur growing with distance", "negative_prompt": "regenerated person, different face, changed expression, smoothed skin, changed clothes, different pose, person larger or smaller in the frame, background light from the side opposite the face, relit face, cut-out outline, halo around the hair, bright edge on the shoulders, background too sharp, composite look, people in the background, cars, legible signs, text, letters, logos, watermark, AI artifacts, deformed hands, extra fingers, resemblance to a celebrity" }