ISO 2910:2018

Name: ISO 2910:2018 — Cinematography — Screen luminance and chrominance for the projection of film motion pictures
SKU: ISO 2910:2018
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Cinematography — Screen luminance and chrominance for the projection of film motion pictures

Название (английский):

ISO 2910:2018

Cinematography — Screen luminance and chrominance for the projection of film motion pictures

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 5
Дата публикации:: 9 февраля 2018 г.
Издание:: ISO IS 2910 edition 4 version 1
ICS:: 37.060.10

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Описание (английский):

ISO 2910:2018 specifies the screen luminance level and chrominance white point for theatrical projection of 70 mm, 35 mm and 16 mm motion-picture prints at a rate of 24 frames per second. ISO 2910:2018 can also be applicable to the non-theatrical presentation of 70 mm, 35 mm and 16 mm motion-picture prints intended for projection at 24 frames per second. NOTE Throughout this document, the term "screen" means the screen-picture area appropriate to the film format and projection system in use.

Abstract

Похожие стандарты

Другие стандарты ISO

Overview

ISO 2910:2018 - "Cinematography - Screen luminance and chrominance for the projection of film motion pictures" specifies required screen light levels and white-point chrominance for the theatrical (and applicable non‑theatrical) projection of 70 mm, 35 mm and 16 mm film at 24 frames per second. The standard defines how to measure screen luminance and chrominance, reference values, acceptable tolerances and recommended distributions to ensure consistent visual reproduction in cinemas, review rooms and presentation venues.

Key topics and technical requirements

Scope and operating conditions

Applies to 70 mm, 35 mm and 16 mm film projected at 24 fps; measurements taken with the projector running and no film in the gate.

Reference luminance

Screen centre reference luminance: 55 cd/m² for all formats.
Recommended acceptable indoor range: 35–65 cd/m² (non‑theatrical lower limit may be 25 cd/m²).

Luminance distribution and tolerances

Edge luminance measured at 10% of screen width should be 50%–85% of centre (recommended 75%).
Evenness should be symmetrical and checked from seating extremes, especially for high‑gain screens.
Multiple-projector luminance match: same-format projectors ≤ 7 cd/m² difference; different-format sequential projectors ≤ 14 cd/m² difference.

Chrominance (white point)

Reference correlated colour temperature: 5800 K with an acceptable single-projector tolerance of ±400 K.
Two-projector chrominance match should not differ by more than 400 K.

Measurement instruments

Luminance: photometer with acceptance angle ≤ 2° (recommended 1.5°), spectral sensitivity of the CIE Standard Observer.
Chrominance: colour‑temperature meter or spot spectroradiometer with acceptance angle ≤ 2°.

Measurement positions

Primary measurement: ~1 m above floor on the theatre longitudinal axis at two‑thirds of the distance from screen to back row; additional checks at two positions one‑third of theatre width to each side.

Stray light limits

No visible stray source with luminance > 3.5 cd/m² from standard observing area.
Stray light on screen: review rooms ≤ 0.4% of projector luminance; theatres ≤ 1.0%.

Applications and who uses it

Cinema operators, projectionists and facilities managers - to set and verify projector output and screen performance for compliant theatrical presentation.

Post‑production, mastering and QC teams - to validate reference viewing conditions in review rooms.

Equipment manufacturers and calibrators - to design and certify projectors, photometers and spectroradiometers for film projection.

Venue planners and acoustical/lighting consultants - to specify screening room lighting and stray‑light control.

Related standards

CIE publications on colorimetry (referenced: CIE 15:2004) and other ISO/IEC color and measurement guidance.

Developed by ISO/TC 36 (Cinematography); consult ISO 2910:2018 for full normative text and Annex A recommended distributions and tolerances.

Keywords: ISO 2910:2018, screen luminance, chrominance, 55 cd/m², 5800 K, theatrical projection, 35 mm, 70 mm, 16 mm, 24 fps, photometer, spectroradiometer.

ISO 2910:2018

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and who uses it

Related standards

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