using the uploaded rendering as the exact source image apply a realistic lighting pass only preserve the image completely do not change the composition camera angle objects geometry materials colors textures proportions background or any design details do not add remove move resize repaint restyle sharpen blur or reinterpret anything only improve the lighting realism with physically plausible illumination natural shadows subtle ambient occlusion accurate highlights reflections and balanced exposure the final image should look like the same rendering with more realistic lighting and nothing else changed