orthochromatic

詳細解釋：

or.tho.chro.mat.ic

adj.（形容詞）
Of, having, or accurately reproducing the colors of nature.
正色的：關於、具有或精確復造出自然的色彩的
Of or relating to a film, plate, or emulsion that is sensitive to all colors except red and renders red as dark gray and blue and green as light gray.
正色底片：屬於或關於對除了紅色外所有顏色敏感並能將紅色變成深灰色、藍色和綠色變成淺灰色的膠片、膠盤或感光乳膠的

【引伸】
or.thochro.matism