Reference number
ISO 6846:1992
ISO 6846:1992
© ISO 2024
International Standard
ISO 6846:1992
Photography — Black-and-white continuous-tone papers — Determination of ISO speed and ISO range for printing
Edition 2
1992-12
1992-12
ISO 6846:1992
13355
Publicado
(Edición 2, 1992)
Esta publicación se revisó y confirmó por última vez en 2020.
Por lo tanto, esta versión es la actual.
Resumen
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.
Ciclo de vida
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Anteriormente
RetiradaISO 6846:1983
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Ahora