THE APPLICATION OF A COLOR REPRODUCTION INDEX TO PHOTOGRAPHIC TRANSPARENCIES

An investigation of the influence of non-Planckian light sources on ph otographic colour reproduction, when using a daylight-balanced reversa l film, has been used to link subjective evaluation of acceptability w ith objective colorimetric measurements. Subjective category scaling o f the projected transparencies is related to Colour Reproduction Indic es calculated using the Hunt colour appearance model. Results are pres ented which identify the most important neutral tones in determining t he acceptance of projected transparencies. Scaling category widths are evaluated in terms of the calculated Colour Reproduction Index.