牧民与牦牛特写的高原生活场景

Ultra realistic close documentary photograph, head and shoulders of an authentic adult Tibetan yak in high altitude pastoral life. Extremely realistic long coarse black hair with individually visible strands, natural tangles, faint dust and grass caught in fur. Moist natural eye reflecting sky and ambient light, realistic skin texture around eye, detailed wet nose, subtle breath condensation in cold air. Yak standing naturally or quietly grazing, not posed. Tibetan nomad partially visible beside or behind yak - only partial body and arm shown - wearing dark traditional pastoral clothing, gently adjusting rope or touching yak's shoulder, functioning as part of the environment. Background: authentic alpine pasture, rough nomadic tent, distant blurred snow mountains. Shallow depth of field, soft natural side light at early morning or late evening, subtle highlights across fur. 4K, photorealistic, physically accurate hair/skin/eye texture, authentic documentary style, natural ambient light, minimal color grading. No studio lighting, HDR, oversharpening, CGI, commercial livestock look, plastic texture, modern equipment, text, or watermark.