大家知道,彩色胶片的密度测定是比较复杂的,使用不同的红、绿、蓝滤色镜,会得到不同的测值。比较通用的红、绿、蓝滤色镜是著名的雷登92、93、94。从1946年起,柯达公司开始使用称为A状态的三色滤色镜测定彩色反转片。1963年该公司发表了M状态密度滤色镜,用以测定彩底、彩中、彩翻底以及需要上印片机印片的所有片种。1973年柯达公司进一步把密度测定的光谱条件标准化,提出了A状态和M状态密度的响应函数。在仪器光谱特性满足规定的仪器响应后,就能使用柯达保证的AA和MM滤 We all know that the density of color film is more complex, using different red, green and blue filters, will get different measured values. The more common red, green and blue filters are the famous Redden 92,93,94. Since 1946, Kodak Company began to use the color filter called the A state of the color reversal film. In 1963, the company published M state density filters to determine the color, color, color, and color of the prints on the printer. In 1973, Kodak Company further standardized the spectral conditions of density measurement, and proposed the response functions of state A and state M density. After the instrument’s spectral characteristics meet the specified instrument response, Kodak Guaranteed AA and MM Filters