The Application of a Colour Reproduction Index to Photographic Transparencies

Abstract

An investigation of the influence of non-Planckian light sources on photographic colour reproduction, when using a daylight-balanced reversal film, has been used to link subjective evaluation of acceptability with objective colorimetric measurements.

Subjective category scaling of the projected transparencies is related to Colour Reproduction Indices calculated using the Hunt colour appearance model. Results are presented which identify the most important neutral tones in determining the acceptance of projected transparencies. Scaling category widths are evaluated in terms of the calculated Colour Reproduction Index.