ISO 12233-2024 PDF

Full title and description

ISO 12233:2024 — Digital cameras — Resolution and spatial frequency responses. This international standard specifies standardized methods and definitions for measuring resolution and spatial frequency response (SFR) of digital still cameras (monochrome and colour) that produce digital output; it replaces the withdrawn 2023 edition and is the current fifth edition of ISO 12233.

Abstract

This document specifies methods for measuring the resolution and the spatial frequency response (SFR) of digital cameras. It is applicable to the measurement of both monochrome and colour cameras which output digital data. The standard defines test conditions, chart illumination and setup, measurement procedures (including slanted-edge/SFR approaches), definitions of resolution metrics, and reporting requirements.

General information

• Status: Published.
• Publication date: 16 September 2024 (Edition 5, 2024).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 37.040.10 (Photography / electronic imaging).
• Edition / version: Edition 5 (2024).
• Number of pages: 73 pages (official ISO published PDF).

Scope

ISO 12233:2024 standardizes objective measurement methods for camera resolution and spatial frequency response (SFR), including definitions, test-chart requirements, illumination and imaging conditions, analysis procedures (e.g., slanted-edge SFR), and reporting formats. It is intended for use with digital still cameras (colour and monochrome) that output digital data and addresses sampling, MTF/SFR measurement, and practical test setup so results are comparable across laboratories and products.

Key topics and requirements

• Formal definitions of resolution metrics (visual resolution, vertical/horizontal resolution) and SFR/MTF terminology used in camera testing.
• Recommended test-chart features and layouts (slanted-edge features, Siemens stars/zone plates, wedges) and guidance on chart manufacture and sizes.
• Test conditions: chart illumination, uniformity, exposure and capture conditions required to obtain valid measurements.
• Measurement procedures for SFR/MTF (including the slanted-edge method), sampling considerations, aliasing and reporting of results (units, lines per picture height, MTF values).
• Guidance on handling colour vs. monochrome sensors, demosaicing effects, and post-capture processing impacts on measured resolution.
• Normative references and pointers to supporting software, test charts and supporting resources (imaging.org / IS&T resources).

Typical use and users

Used by camera and sensor manufacturers, imaging system test laboratories, component and module suppliers, image quality engineers, independent reviewers and researchers to validate and document spatial resolution and frequency-response performance. It is also used by standards committees and certification bodies as the reference method for inter-laboratory comparison and product datasheets.

Related standards

ISO 12233 is part of a family of photography/image-quality standards under ISO/TC 42. Commonly referenced complementary standards include ISO 15739 (noise measurements), ISO 12232 (ISO speed / exposure index), ISO 14524 (OECF / opto-electronic conversion function), ISO 17850 (geometric distortion), ISO 18844 (stray light / flare) and others used in camera image-quality characterization. Industry tools and vendors (e.g., Imatest and related resources) commonly implement and cross-reference these standards.

Keywords

ISO 12233, digital camera, resolution, spatial frequency response, SFR, MTF, slanted-edge, test chart, image quality, ISO/TC 42, camera testing.

FAQ

Q: What is this standard?

A: ISO 12233:2024 is the international standard that specifies methods and definitions for measuring the resolution and spatial frequency response of digital still cameras (monochrome and colour).

Q: What does it cover?

A: It covers test-chart requirements, illumination and capture conditions, measurement procedures (including slanted-edge SFR/MTF methods), sampling and aliasing considerations, result calculation and reporting formats to ensure comparable resolution/SFR measurements.

Q: Who typically uses it?

A: Camera and sensor manufacturers, independent test labs, image‑quality engineers, reviewers and researchers use the standard to characterize and compare spatial-resolution performance. Standards bodies and certification labs also use it as the reference method.

Q: Is it current or superseded?

A: ISO 12233:2024 is the current (published) edition; it supersedes and replaces the withdrawn 2023 edition. An amendment (CD Amd 1) related to the 2024 edition is shown as under development.

Q: Is it part of a series?

A: Yes — ISO 12233 belongs to the ISO/TC 42 suite of photography and image-quality standards and is commonly used together with ISO 15739 (noise), ISO 12232 (speed/exposure), ISO 14524 (OECF) and other related standards for comprehensive camera characterization.

Q: What are the key keywords?

A: Key keywords are resolution, spatial frequency response (SFR), MTF, slanted-edge, test chart, digital camera testing, ISO/TC 42.