Yellowish Blue
HUI Gi-wai Echo
05:00 | 16:9 | 2018 | mp4
To see is to believe. Two complementary coloured lights add on to each other and cancel out each other whereas the shadow captures that process. Working with the limitation of optics and illusion, I encourage the spectator to think about what it is that they see.
I transform the optical phenomenon of the negative afterimage and its psychological version, ‘after-sensation’, into a five-minute moving image. I staged two complementary-coloured artificial light source in symmetry, displaying the colour yellow and blue respectively. In the RGB colour system, mixing the primary colour blue with the complementary colour yellow would produce the colour white. The yellow light switches off all of a sudden, leaving a sea of blue light. Then the blue light is gone, only darkness remains.

眼見為實? 視覺主導了我們對世界的感知。這份作品源於我對感官與感知的邊界的探究,觸及光學和幻象視覺的限制,試圖令觀者思考自己的所見。
我將「負後像」(after image) 這個視覺生理現像,以及心理學家稱之為「後感覺」的、停留於視覺的殘影,轉化成五分鐘的流動影像。影像中的我設置兩個互補色的光源,對稱地打在白幕上。互補色光源加疊後,原本的投射在白幕上的顏色會互相抵消,呈現白色。黃光消失於一瞬,餘下一片藍光。然後,藍光也熄滅了,畫面頃刻剩下黑暗。
Original licenses

CC BY-NC-ND (Creative Commons License Attribution-NonCommercial-NoDerivs)

The primary interest of Echo Hui (HUI Gi-wai, b.1996) is to explore the senses, especially vision. She investigates the boundaries of the senses and perception while crossing disciplinary lines into the realms of science. She often works with light, chemicals, images and moving images, how audiences' motion and perception affect a work and vice versa. Echo’s focus on sight-related mediums is her way to challenge how we see reality.


Keywords 關鍵字

After image, Complementary colour, Seeing, RGB colour system, perception
負後像, 互補色, 視覺, 三原色光模型, 感知