preserve exactly the existing building geometry structure proportions volumes openings and layout do not alter the design apply highly realistic physically based materials natural irregular stone cladding on the laboratory volume with subtle color variation light beige sand soft gray non repeating pattern softened joints matte sealed finish smooth stucco plaster walls with fine texture and natural imperfections dark wood or metal cladding with realistic grain and roughness ultra realistic glass with accurate reflections of sky and surroundings proper transparency interior depth and slight reflectivity variation add natural realistic vegetation healthy green plants with varied species natural leaf translucency correct scale subtle shadow casting use clear blue sky soft natural daylight realistic sun angle balanced exposure global illumination soft shadows professional architectural photography style neutral color grading high realism 4k detail