Beam angle: narrow beam for paintings, wide beam for walls

A wall simultaneously showing the effects of two beam angles. On the left, a painting hangs, illuminated by a 15-degree narrow-beam spotlight: the light spot's range falls precisely within the picture frame, with clear edges. The painting is bright, while the surrounding wall remains dark, making the painting stand out independently. On the right is an empty wall, illuminated by a 60-degree wide-beam wall washer: the light spreads across the wall into a continuous large bright area, with lower but uniform brightness, emphasizing the wall surface itself rather than any object on it. Both lights have the same color temperature, but the shapes and brightness distribution left on the wall are completely different. Avoid: making the two light spots appear the same size, eliminating the clear edge of the narrow light spot, illuminating the entire wall with uniform brightness, adding colored light.

Translated from Chinese by AI.

一面牆上同時呈現兩種光束角的效果。左側掛著一幅畫,由一盞十五度窄角的投射燈照明:光斑的範圍剛好落在畫框內,邊緣清楚,畫作明亮而周邊牆面維持暗,畫像被獨立地捧出來。右側是一整片空牆,由六十度寬角的洗牆燈照明:光在牆上鋪開成連續的大面積亮區,亮度較低但均勻,強調的是牆這個面本身,而不是牆上的任何一件物品。兩種光的色溫相同,但在牆上留下的形狀與亮度分佈完全不同。避免:讓兩種光斑看起來一樣大、消除窄光斑的清晰邊緣、把整面牆打成均勻亮度、加入彩色光。