1、ANSUISO 6-1993, ANSI/NAPM mi-1993 for Photography - Black-and- White Pictorial Still Camera Negative Film/Process Systems - Determination of IS0 Speed e= American National Standards tnstitute 11 West 42nd Street New York, New York 10036 ANSI/IS0 6-l 993, ANSVNAPM IT251 993 Revision and redesignation
2、 of ANSI PH2.5-1979(R1986) American National Standard for Photography - Black-and-White Pictorial Still Camera Negative Film/Process Systems - Determination of IS0 Speed Secretariat National Association of Photographic Manufacturers, Inc. Approved November 14, 1994 American National Standards Instit
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9、tandards Institute 11 West 42nd Street, New York, New York 10036 Copyright 0 1993 by International Organization for Standardization All rights reserved. No part of this publication may be reproduced in any form, in an electronic retneval system or otherwise, without prior written permlssion of the p
10、ublisher. Printed in the United States of America APS2C395121 Contents Page Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . # ii Introduction . . . . . . . .
11、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv 1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 Definitions . . . . . . . . . . . . . . . . . . . . . .
13、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 Sampling and storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14、1 5 Test method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 Product classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 7 Product marking and labelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Table 1 IS0 speed scales . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Figure 1 Method for determining speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Annexes A Suggested method of determining log,
17、c H, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 B Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Foreword (This foreword IS
18、 not part of Amencall NatIonal ljtandard ANSI/IS0 6- 1993, ANSI/NAPM IT2 5-1993. This document IS Identical to IS0 6-1993 and the following five paragraphs are the orlginal foreword as it appeared in that document.) IS0 (the InternatIonal Organization for Standardization; IS a warldwlde fed- eration
19、 of national standards bodies (IS0 member bodies). The work of preparing International Standards IS normally carried out through IS0 tech- nical 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
20、. InternatIonal organizations, governmental and non-gov- ernmental, in liaison with ISO, also take part in the worh. IS0 collaborates closely with the International Electrotechnlcal CornmIssion (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the tec
21、hnical committees are cir- culated to the member bodies for voting. Publication as an International Standard requires approval by at least 75% of the member bodies casting a vote. International Standard IS0 6 was prepared by Technical Committee ISO/TC 42, Photography. This second edltion cancels and
22、 replaces the first edrtron (IS0 6: 1981), which has been technically revised. Annexes A and B of this International Standard are for InformatIon only. Suggesttons for Improvement of this standard WIli be welcome. They should be sent to the National Association of Photographic Manufacturers, Inc., 5
23、50 Mamaroneck Avenue, Suite 307. Harrison, NV 10528-1612. This standard was processed and approved for submittal to ANSI by NAPM Technical Committee IT2 on Image Evaluation Committee approval of the standard does not necessarily Imply that all committee members voted for its approval. At the time th
24、is standard was approved, the IT2 Committee had the followlng members: William F. Voglesong, Chairman Kay E. Dodds, Vice-Chairman Charles G. Saleski, Secretary Organlzat/on Represented American Roentgen Ray Society _. Association for information and Image Management . Association of Reproduction Mat
25、erial Manufacturers, Inc. Azon Corporation . . . . . _ Canadian Standards Association (Liaison) , Graphic Communication Assoclatlon. ,1, Graphic Mlcrosystem ,_ _ , GTI Graphic Technology, Inc _ International Bustness Machines Corporation National Association of Photographic Manufacturers. Inc Name o
26、r Representative Vacant .Jean M. Baronas Marilyn Courtot (Alt ) PhIlIp P Nowers Robert C Johnson (Alt.) Edward C Blalczak .Davrd Sommers .Norman W ScharDf James E. Harvey (Alt.) .james R. Cox Charles G Sialeskl FAIID C A. Mathur r;a/ E Goclds incmas McKeehan (Alt ) Rjchard S FISCI John Scu!er (AH.)
27、Organization Represented Name of Representative Alex Pendleton Thomas Lumenello (Alt.) Daniel E. Sinto Joseph fated when quoting IS0 speed values. 6.3 Accuracy The callbratron of the equipment and processes in- volved In determrnrng film speed shall be adequate to ensure that the error In log, H, IS
28、 less than 0,05 7 Product marking and labelling Speed of a product, determined in accordance with this lnternatronal Standard and expressed on the scales of table 1, may be designated IS0 speed and denoted In one of the following forms, a) by IS arithmetic speed , e.g IS0 100; b) by Its logarithmic
29、speed, e.g. IS0 21”, c) by both its anthmettc and its loganthmlc s.peed, e.g. IS0 100/21”. However, since the speed IS dependent OII the 0 - illumrnant, exposure time and process used, these condrtrons should be clearly Indicated whenever prac- tical when quoting values to avoid misinterpretation. 4
30、 ANSI/IS0 6-1993, ANSVNAPM IT251 993 Annex A (informative) Suggested method of determining log,O H, The value of log,c H, can be determined by plottrng log, H, at a point where the densrty IS 0,lO above base plus fog density, against Q, the difference in density between this point and a pornt where
31、the base 10 logarithm of the exposure IS 130 unrts greater. This IS then repeated for a development series. Draw a smooth curve through the points. Determtne the log, H corresponding to ALI = 0,80 whch IS designated lw,o 4,. 1250 1 1000 1 800 1 640 1 500 1 1001 1 320 1 250 1 200 1 160 I I I I 1.0 0.
32、9 0.e 0, 0,7 0.6 -3.25 -3.05 -2.85 -2.65 -2.45 -2.25 wh,H OQ,oHm Figure A.1 - Method of determining log, H, 5 ANSI/IS0 6-1993, ANSVNAPM IT2.5-1993 Annex B (informative) Bibliography l IS0 51:1984, Photography - Density 4 IS0 2721:1982, Photography - Camera.s - measurements - Pati 7: Terms, symbols a
33、nd Automatic controls of exposure notations. 2 IS0 554:1976, Standard atmospheres for con- dflioning and/or testjng - Speaf/cat/ons. 3 ISO 2720:1974, Photography - General pur- pose photograph/c exposure meters (photoelec- tfic type) - Guide to product specif/cation. 5 IS0 5800:1987, Photography - Co/our negatwe films for St/l/ photography - De?erm,natlon of IS0 speed. S IS0 6846: 1992, Photography - Black-and-whlte contwous-tone papers - Defermlnar/on of IS0 speed and IS0 range for pnnr/ng.
