请选择需要导出的字段：
ISO 6846-1992
Photography -- Black-and-white continuous-tone papers -- Determination of ISO speed and ISO range for printing
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.
知识产权声明 | 服务承诺 | 联系我们 | 客户服务 | 关于我们
互联网出版许可证：新出网证(京)字042号 互联网药品信息服务资格证书号：(京)-经营性-2011-0017 信息网络传播视听节目许可证 许可证号：0108284
万方数据标准管理系统V1.0 证书号:软著登字第4252816号
京ICP证：010071 京公网安备11010802020237号 京ICP备08100800号-1
客服电话：4000115888 客服邮箱：service@wanfangdata.com.cn 违法和不良信息举报电话：4000115888 举报邮箱：problem@wanfangdata.com.cn 举报专区：https://www.12377.cn
万方数据知识服务平台--国家科技支撑计划资助项目（编号：2006BAH03B01）©北京万方数据股份有限公司 万方数据电子出版社
