ISO 9848:1993 PDF
Photography — Source document microfilms — Determination of ISO speed and ISO average gradient
Название (английский):
ISO 9848:1993
Photography — Source document microfilms — Determination of ISO speed and ISO average gradient
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 7
- Дата публикации:
- 29 апреля 1993 г.
- Издание:
- ISO IS 9848 edition 1 version 1
- ICS:
- 37.040.20
Описание (английский):
The method of determination specified is based on exposing and processing samples, measuring density from the resultant images to produce a sensitometric curve from which values are taken and used to determine ISO speed and ISO average gradient. Applies to black-and-white camera negative photographic films used for first generation microfilming of source documents at exposure times typically found with tungsten sources.
Технические детали
- Технический комитет
- ISO/TC 42 - Photography
- SKU
- ISO 9848:1993