ISO 6846:1992
Photography — Black-and-white continuous-tone papers — Determination of ISO speed and ISO range for printing
| Edition date: |
1992-12-03
In Force
|
|---|---|
| Available languages: | French, English |
| Summary: | 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. |
| ICS: | 37.040.20-Photographic paper, films and plates. Cartridges |
| CTN: | ISO/TC 42 - 48420 |
|
Standards Cancellations |
Anula a ISO 6846:1983 |










