or·tho·chro·mat·ic 
(ôr′thō-krō-mătĭk)
(ôr′thō-krō-mătĭk)adj.
Photography
Photography
1. Of, relating to, or accurately reproducing the colors of the subject.
2. Sensitive to all colors except red: orthochromatic film.
or′tho·chroma·tism (-krōmə-tĭz′əm) n.