Uplighting and downlighting: The direction of light determines the material's character

Nighttime exterior of a concrete building, where the same material presents two different appearances due to the direction of light. The lower half of the building is illuminated from the ground upwards, causing the formwork marks and bolt holes in the concrete to cast upward shadows, creating a hard and dramatic expression, making the mass appear heavy. The upper half is washed with light from the eaves downwards, with shadows cast downwards, consistent with the direction of daylight. The material looks natural and calm, making the mass appear light. In the middle section, where the two lights meet, a dark band with the lowest brightness is created, horizontally dividing the building into two segments. The surrounding environment maintains low brightness, with only the building itself glowing. The color temperature is a consistent neutral white. Avoid: making the upper and lower sections look the same, adding contour lighting, using colored light, brightening the dark band.

Translated from Chinese by AI.

一棟混凝土建築的夜間外觀,同一種材料因為光的方向而呈現兩種面貌。建築下半部由地面向上投光,混凝土的模板痕與螺栓孔投下向上的陰影,表情硬而戲劇化,量體顯得沉重。上半部由屋簷向下洗光,陰影朝下,與白天日光的方向一致,材料看起來自然平靜,量體顯得輕。中段兩種光交會處產生一道亮度最低的暗帶,把建築水平地切成兩段。周邊環境維持低亮度,只有建築本身發光。色溫一致的中性白。避免:讓上下兩段看起來相同、加入輪廓燈、使用彩色光、把暗帶補亮。