photorealistic enhancement of an existing grand staircase keep the original architecture materials and camera angle unchanged add astera ax3 lightdrop fixtures placed directly on the stair treads floor mounted not attached to walls or railings position fixtures along both sides of the staircase sitting on the steps tight against the wall spaced every 2 3 steps each fixture should be a small visible matte black unit clearly resting on the step surface angled upward to create vertical wall uplighting the light should produce a smooth cyan blue wash on the walls starting from the base of each fixture and fading upward with natural falloff ensure the light is clearly coming from the floor fixtures not from behind railings or hidden sources maintain symmetry on both sides light should softly illuminate wall panels and architectural details with subtle spill onto the stairs and brass railings style should be realistic event uplighting clean high end with accurate shadows and no exaggerated glow
