1、BSI Standards PublicationBS ISO 18383:2015Photography Digital cameras Specification guidelineBS ISO 18383:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 18383:2015.The UK participation in its preparation was entrusted to TechnicalCommittee CPW/42, Photogr
2、aphy.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI Sta
3、ndardsLimited 2015ISBN 978 0 580 80998 9ICS 37.040.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 September 2015.Amendments issued since publicationDate Text
4、 affectedBS ISO 18383:2015 ISO 2015Photography Digital cameras Specification guidelinePhotographie Camras numriques Ligne directrice de spcificationINTERNATIONAL STANDARDISO18383First edition2015-09-01Reference numberISO 18383:2015(E)BS ISO 18383:2015ISO 18383:2015(E)ii ISO 2015 All rights reservedC
5、OPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet,
6、 without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.o
7、rgBS ISO 18383:2015ISO 18383:2015(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Definition set of the product specifications of DSCs 24.1 Basic requirements . 24.2 Definitions of specifications 34.2.1 General 34.2.2 Optical system 44.2.3 Camera control sy
8、stem . 84.2.4 Key components 144.2.5 Recording system .214.2.6 Image quality .234.2.7 Response time .304.2.8 Miscellaneous features 33Annex A (normative) Measurement methods of features not related to image quality 39Annex B (normative) Related standards .46Annex C (informative) Commentary 58Bibliog
9、raphy .61 ISO 2015 All rights reserved iiiContents PageBS ISO 18383:2015ISO 18383:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out
10、through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO coll
11、aborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approv
12、al criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the su
13、bject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any tr
14、ade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the T
15、echnical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 42, Photography.iv ISO 2015 All rights reservedBS ISO 18383:2015ISO 18383:2015(E)IntroductionThe digital still camera (DSC) marketplace continuously produ
16、ces and promotes new and competitive cameras. Requiring that manufacturers produce DSCs with standard numerical specifications impedes the technical progress, interferes with fair market competition, hinders the sound development of the industry, reduces camera innovation, and limits the customers c
17、hoice. On the other hand, standardized definitions of a fundamental set of camera specifications can help consumers to choose, purchase, and use these cameras because they provide the information needed to understand and compare the numerical specifications offered by the manufacturers and, thus, co
18、ntribute to the fair competition in the market.The various fundamental features of DSCs have close relationships with other features, such as camera size or cost. Nonetheless, these features, their relationships, and their numerical values vary with time and technological evolution. Manufacturers de
19、sign and build their cameras to numerical specifications that balance performance with their estimation of the competitiveness of the product in and the feedback from the marketplace.This International Standard identifies a set of fundamental features that describe DSCs, along with their accepted de
20、finitions, measurements, and presentation methods, but it does not define nor specify numerical values for the features, functions for calculating these values, nor limiting values required for these features.This International Standard is based on Reference 1 prepared by Camera and Imaging Products
21、 Association (CIPA). ISO 2015 All rights reserved vBS ISO 18383:2015BS ISO 18383:2015Photography Digital cameras Specification guideline1 ScopeThis International Standard identifies a set of features that describes digital still cameras (DSCs), and it specifies their definitions, measurement methods
22、, and presentation methods. This International Standard applies to DSCs designed and produced for and promoted to general consumers and need not be applied to those DSCs designed and produced to meet individual and special specifications agreed upon by particular business or industrial users and the
23、 manufacturer.The presentation methods specified in this International Standard are intended for use as notations on camera bodies, on product packaging, on promotional materials for advertising and at the point of purchase, in electronic or printed catalogues and other materials, and in the relevan
24、t software.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including
25、 any amendments) applies.ISO 516, Photography Camera shutters TimingISO 517, Photography Apertures and related properties pertaining to photographic lenses Designations and measurementsISO 2720, Photography General purpose photographic exposure meters (photoelectric type) Guide to product specificat
26、ionISO 12232, Photography Digital still cameras Determination of exposure index, ISO speed ratings, standard output sensitivity, and recommended exposure indexISO 12233, Photography Electronic still picture imaging Resolution and spatial frequency responsesISO 14524, Photography Electronic still-pic
27、ture cameras Methods for measuring opto-electronic conversion functions (OECFs)ISO 15739, Photography Electronic still-picture imaging Noise measurementsISO 15781, Photography Digital still cameras Measuring shooting time lag, shutter release time lag, shooting rate, and start-up timeISO 17850, Phot
28、ography Digital cameras Geometric distortion (GD) measurementsISO 17957, Photography Digital cameras Shading measurementsISO 19084, 1)Photography Digital cameras Chromatic displacement measurementsIEC 61747-6:2003, Liquid crystal and solid-state display devices Part 6: Measuring methods for liquid c
29、rystal modules Transmissive type3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.1) To be published.INTERNATIONAL STANDARD ISO 18383:2015(E) ISO 2015 All rights reserved 1BS ISO 18383:2015ISO 18383:2015(E)3.1factory shipping conditionsfactory shippi
30、ng settingsfactory shipping valuesfactory shipping modecamera settings and parameters as configured by the manufacturer for shipping from the factory3.2image arearegion of an image sensor in the focal plane that captures the part of the incident image and that corresponds to the output image data3.3
31、output imageimage created by a DSC through capture of an optical image by an image sensor followed by processing and then output through any communication means3.4primary notationnotation which describes feature name and value presented solely or most noticeably3.5ring pixellight-sensitive pixels in
32、 the image sensor of a DSC, that are outside the image area and are used in the image processingNote 1 to entry: Examples of image processing are demosaicing, noise reduction, and spatial filtering.4 Definition set of the product specifications of DSCs4.1 Basic requirementsThis International Standar
33、d does not mandate the inclusion and reporting of any features but provides a reference on what presentation methods and written expressions should be used for particular features. The requirements for the definition, measurement, and presentation of the set of DSC features established in this Inter
34、national Standard are described below. Note well that the requirements do not specify numerical values for any features that DSCs shall achieve. There are features included in this International Standard with the paradoxical statement, “This International Standard does not cover this feature.” These
35、 features are commonly found on many cameras. They are included for completeness and to explicitly recognize that these features are only specified at the discretion of the manufacturer.a) When a feature is described on the product, in catalogues, or in other documents, the presentation method of th
36、e feature and its measured values shall comply with the following requirements:1) Features and their values with factory shipping settings or modes shall be presented as the primary notation of those features. The primary notation need not include the description of the setting and measurement condi
37、tions. When additional values with different settings are described, they shall include the details of the settings and measurement conditions.2) The descriptions of features and their values that are not available through factory shipping settings shall include the settings or modes that make these
38、 features available. Features available in multiple settings or modes shall be made available with the setting or mode that is assumed to be the most likely used and shall be presented if they affect the functionality.3) Features with no default parameters or modes in the factory shipping setting sh
39、all be assigned parameters or modes that are assumed to be the most likely used. They shall be presented if they affect the functionality.2 ISO 2015 All rights reservedBS ISO 18383:2015ISO 18383:2015(E)4) Exceptions to the priority on the factory shipping setting may be given to certain features def
40、ined in 4.2. They may be given when the above requirements are redundant or when the descriptions with the other settings, parameters, or modes give the users more accurate and definitive information.b) For cameras with interchangeable lenses, the presentation of any features affected by the choice
41、of lens shall include information that identifies the lens (for instance, the model name of lens, type of lens) attached to the camera and that produces, requires, or otherwise affects that feature. The choice of the lens used in the specification of the feature is left to the discretion of the manu
42、facturer.c) The reported numerical values of features shall be based on measurements using the actual camera and the standard methods of measurement and calculation. The values designed and verified by the manufacturer may be used when the feature does not have an established measurement and/or calc
43、ulation method.d) Variations in names and expressions for features in this fundamental set of features, such as customary names and company-used names, may be used unless1) the standard explicitly requires a name or an expression;2) a variation in a name or expression could cause confusion with the
44、name or expression of any other feature in the set of features in this standard;3) a variation in a name or an expression could cause a misunderstanding.e) Specific requirements explicitly stated for any particular feature of this set shall have precedence over any of these basic requirements.f) Reg
45、ardless of the specified number of significant figures for each feature in the definition set, the number of decimal places may be omitted for integer values in the presentation.EXAMPLE 4,0 times - 4 times; 2,0 s - 2 s; 2,0 m - 2 m.4.2 Definitions of specifications4.2.1 GeneralTables 1 to 7 specify
46、the definition, the measurement, and the presentation of a set of fundamental features of DSCs.In the International Standards for individual features developed by ISO or CIPA, detailed ways of indicating specifications and various characteristics are presented; however, they tend to be too complicat
47、ed for descriptions in catalogues and other materials for general consumers. Therefore, Tables 1 to 7 give compact notations for individual features that are consistent with official standards and are presented with examples of notation.The following are conventions used in Tables 1 to 7.a) The nota
48、tion xxx means that xxx may be omitted from the description.b) The notation yyy | zzz means that either yyy or zzz may be used in the description.c) The word “company” used in the “Specifications (Definitions)” column refers to any supplier of the DSC.d) The phrase “depress the shutter button” refer
49、s to the operation of fully pressing the shutter button as well as any other general means for starting exposure. ISO 2015 All rights reserved 3BS ISO 18383:2015ISO 18383:2015(E)4.2.2 Optical systemTable 1 specifies the definition, the measurement, and the presentation of a set of features for optical systems.Table 1 Definitions of specifications and presentation method for optical systemNo. Features Guidelines for specifications (definitions) and presentationRemarks1 available focal leng
