一、引言作者在以前的综述Ⅰ中,论述了彩色照片的主观质量评价(以下简称主观评价);彩色负片的的曝光范围与信噪比的关系;主观评价与信噪比的关系;并由信噪比确定彩色负片的照相速度,进而提出“画面质量——照相速度”的概念,如图1所示。富士 HR100、200、400、1600彩色负片的曝光速度各不相同。 I. INTRODUCTION In the previous review, I discussed the subjective quality evaluation of color photographs (hereinafter referred to as subjective evaluation), the relationship between the exposure range of color negative film and signal to noise ratio, the subjective evaluation of the relationship between signal to noise ratio and The signal-to-noise ratio determines the photographic speed of the color negative film, and then proposes the concept of “picture quality-photographic speed”, as shown in FIG. 1. Fuji HR100, 200,400,1600 color negative exposure speed varies.