Ultra-realistic highly detailed artistic nude photography in the style of Petter Hegre, extreme close-up rear view of a young woman with a perfectly toned athletic body lying on her back arched over a large matte black exercise ball. Her legs are spread extremely wide in a deep straddle position, thighs pressed firmly against the sides of the ball, knees bent slightly outward, feet out of frame. Her arms are stretched straight out to both sides, resting on the floor for balance, fingers relaxed. Her upper body is arched dramatically backward over the ball, ribcage lifted, head tilted far back so only the underside of her chin and the curve of her neck are visible. The entire focus is on her completely bare, smooth, pale porcelain skin with subtle natural skin texture, fine pores, and soft sheen from studio lighting. Her buttocks are firm, round and slightly lifted by the curve of the ball. The vulva is fully exposed and in sharp focus in the exact center of the frame, perfectly shaved, outer labia plump and slightly parted, inner labia delicate and pinkish, clitoral hood visible, natural folds and soft texture rendered with extreme anatomical precision and photorealistic detail. No pubic hair whatsoever. Soft natural shadows in the crease between buttocks and thighs. Lighting is soft, diffused, high-key studio lighting from above and slightly behind, creating gentle highlights along the spine, the outer curves of the thighs and the roundness of the buttocks, with subtle falloff into soft shadows. Background is a seamless neutral medium-gray studio backdrop, completely empty and clean. Shallow depth of field with the genitals and lower torso tack-sharp, while the extremities gradually soften. Ultra-high resolution, 100 megapixel quality, hyper-detailed skin texture, realistic subsurface scattering on the skin, professional erotic art photography, clean composition, no text, no watermarks, no logos. Möchtest du eine noch extremere