BS ISO 6846-1995 摄影技术.黑白连续色调相纸.晒印用ISO感光度和ISO幅距的测定

标准号：BS ISO 6846-1995
中文标准名称：摄影技术.黑白连续色调相纸.晒印用ISO感光度和ISO幅距的测定
英文标准名称：Photography - Black and white continuous tone papers - Determination of ISO speed and ISO range for printing
标准类型：G81
发布日期：1995/12/15 12:00:00
实施日期：1995/12/15 12:00:00
中国标准分类号：G81
国际标准分类号：37.040.20
适用范围：Pertains to all conventional silver-halide contact and enlarging papers used for continuous-tone or pictorial photography. The method is based on exposing and processing samples, performing density measurements from the resultant image to produce a sensitometric curve from which measurements are taken and used to determine ISO speed and ISO range values. Annexes A to C deal with the relationships between the paper range and the effective density range of the negative, log exposure range and contrast, and log exposure range and average gradient.