make this render fully photorealistic while preserving 100 of the existing architecture layout proportions scale walls openings furniture positions and all design details exactly as they are do not redesign reinterpret simplify or modify anything do not change wall positions dimensions heights thicknesses or spatial relationships keep all materials colors finishes and textures exactly the same except change the ceiling material to light oak wood with realistic grain and natural tone only enhance the image with realistic lighting accurate shadows natural reflections true to life material behavior camera exposure global illumination and photoreal rendering quality maintain the exact camera angle and composition the goal is to improve realism only not design with the single exception of the ceiling material