AS ISO 18844-2019 PDF
Name in English:
St AS ISO 18844-2019
Name in Russian:
Ст AS ISO 18844-2019
Original standard AS ISO 18844-2019 in PDF full version. Additional info + preview on request
Full title and description
AS ISO 18844:2019 — Photography — Digital cameras — Image flare measurement. This Australian adoption (identical to ISO 18844) specifies definitions, test patterns, measurement conditions and methods for quantifying image flare (veiling glare) in digital cameras to enable repeatable comparison of measurement results.
Abstract
AS ISO 18844:2019 defines image flare for digital still cameras and provides normative test charts, measurement set-up and procedures for determining veiling glare across the image field. The standard describes recommended measurement conditions, data capture and basic calculation methods; it does not set pass/fail limits but aims to ensure consistent, comparable flare measurements between laboratories and manufacturers.
General information
- Status: Published (identical adoption of ISO 18844).
- Publication date: 12 June 2019 (AS adoption; original ISO publication May 2017).
- Publisher: Standards Australia (AS designation of the ISO document).
- ICS / categories: 37.040.10 (Photographic equipment; image quality measurement).
- Edition / version: Edition 1 (AS ISO 18844:2019 — identical adoption of ISO 18844:2017).
- Number of pages: 12 pages.
Scope
The standard applies to digital still cameras and defines the phenomenon of image flare (veiling glare), prescribes test chart designs (including high-density light traps), camera and lighting arrangements, image capture conditions and numeric procedures for calculating flare metrics. It is intended for use with image data output by cameras and is applicable to comparative laboratory measurements rather than product performance limits.
Key topics and requirements
- Definition and description of image flare (veiling glare) and its visual effects on image contrast and uniformity.
- Specification of test charts and high-density light-trap arrangements used to generate standardized flare patterns.
- Measurement set-up: dark-room conditions, illumination and geometry required for repeatable measurement.
- Image capture requirements (camera settings, exposures, expected file formats) for measurement consistency.
- Calculation methods to derive flare metrics (field-wise veiling glare values and summary statistics).
- Reporting guidance: recommended presentation of results to enable comparison between cameras and laboratories.
- Note that the standard provides measurement methods but does not specify threshold pass/fail criteria.
Typical use and users
Used by camera manufacturers, imaging laboratories, test houses, lens designers and reviewers to measure and compare veiling glare performance of digital cameras and lens/camera systems. Also used in research and development for optical design verification, quality control and to inform product specifications and reviews.
Related standards
Closely associated imaging and camera measurement standards include ISO 12233 (resolution/spatial frequency response), ISO 15739 (noise measurements), ISO 17957 (shading measurements), ISO 17850 (geometric distortion), ISO 14524 (OECF/optical-electronic conversion functions) and related photography/image-quality guidance such as ISO 18383. IEC and surveillance camera standards referencing flare measurement (image quality) may also be relevant for security imaging applications.
Keywords
image flare, veiling glare, digital camera, test chart, light traps, image quality, measurement method, ISO/TC 42, camera laboratory, Standards Australia.
FAQ
Q: What is this standard?
A: AS ISO 18844:2019 is the Australian identical adoption of ISO 18844 (originally published as ISO 18844:2017). It defines methods to measure image flare (veiling glare) in digital cameras.
Q: What does it cover?
A: It covers definitions, test chart specifications (including high-density light traps), measurement set-up and procedures, data capture requirements and calculation/reporting methods for quantifying image flare. It does not set pass/fail limits.
Q: Who typically uses it?
A: Camera and lens manufacturers, independent test laboratories, R&D teams, reviewers and others concerned with objective measurement and comparison of camera flare performance.
Q: Is it current or superseded?
A: AS ISO 18844:2019 is the published Australian adoption of ISO 18844 and is current as the adopted edition (published 12 June 2019). The underlying ISO document was published in May 2017; standards are subject to periodic review—confirm the current status with Standards Australia or ISO if an authoritative current-status check is required.
Q: Is it part of a series?
A: It is part of the family of ISO/TC 42 photography and digital imaging measurement standards (for example ISO 12233, ISO 15739, ISO 17850 and others) that together define methods for measuring various aspects of digital camera image quality.
Q: What are the key keywords?
A: Image flare, veiling glare, digital camera, test chart, light-trap, image-quality measurement, ISO 18844, Standards Australia.