ISO 4238:1976
Cinematography — Optical printing ratios for enlargement and reduction of motion-picture film images — Specifications
Cinematography — Optical printing ratios for enlargement and reduction of motion-picture film images — Specifications
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 2
- Дата публикации:
- 1 декабря 1976 г.
- Издание:
- ISO IS 4238 edition 1 version 1
- ICS:
- 37.060.20
Abstract
Overview
ISO 4238:1976 - "Cinematography - Optical printing ratios for enlargement and reduction of motion‑picture film images - Specifications" defines recommended optical printing ratios used when transferring motion‑picture images between film formats. The standard addresses both intermittent and continuous printing operations, provides ratio guidance for common film widths (8 mm, 16 mm, 35 mm, 65/70 mm) and distinguishes anamorphotic and non‑anamorphotic variants. supplies practical numeric ratios in a table and sets usage notes to minimize picture loss during format conversion.
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