ISO 6846-1992 摄影 黑白连续色调相纸 印相用ISO感光速度和宽容度的测定

标准号：ISO 6846-1992
中文标准名称：摄影 黑白连续色调相纸 印相用ISO感光速度和宽容度的测定
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：A15
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：A15
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.