ISO 3334:2006

INTERNATIONAL ISO
STANDARD 3334
Third edition
2006-01-01

Micrographics — ISO resolution test
chart No. 2 — Description and use
Micrographie — Mire de résolution ISO no. 2 — Description et utilisation




Reference number
ISO 3334:2006(E)
©
ISO 2006

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ISO 3334:2006(E)
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ii © ISO 2006 – All rights reserved

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ISO 3334:2006(E)
Foreword
ISO (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 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 collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 3334 was prepared by Technical Committee ISO/TC 171, Document management applications,
Subcommittee SC 1, Quality.
This third edition cancels and replaces the second edition (ISO 3334:1989), which has been technically
revised.
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ISO 3334:2006(E)
Introduction
Micrographic systems vary in their ability to record fine detail such as alphanumeric characters or closely
spaced lines. The method specified in this International Standard involves the measurement of the ability of a
given objective, photosensitive material and processing combination to reproduce the image in fine detail and
therefore to be able to be applied to define and control this aspect of image quality.
Since microrecording systems can be operated close to limits of legibility, resolution testing provides a
safeguard against loss of information, although other factors also contribute to the overall quality of the micro-
image.
ISO 3334 describes a method of testing resolution that employs the ISO resolution test chart No. 2, in which
the test patterns and their arrangement are shown in Figures 1 and 2.
Attention should be taken when referencing this International Standard in other standards. Some countries do
not use this International Standard or they use alternative standards (such as ISO 446).
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INTERNATIONAL STANDARD ISO 3334:2006(E)

Micrographics — ISO resolution test chart No. 2 — Description
and use
1 Scope
This International Standard specifies a method of determining resolution by measuring the minimum size of
detail recognizable in a processed microform. It describes the test patterns and ISO resolution test chart No. 2,
and gives the method of expressing resolving power.
ISO resolution test chart No. 2 is designed for use as part of a test target, as required in other International
Standards for micrographics.
This International Standard applies to the determination of the resolving power of a camera, film and
processing combination used in a microfilming system or the resolution achieved in microforms therefrom. In
this form it does not apply to the determination of the resolving power of microform readers, reader-printers or
computer output microform (COM) imaging systems.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 3:1973, Preferred numbers — Series of preferred numbers
ISO 5-1, Photography — Density measurements Part 1: Terms, symbols and notations
ISO 5-2 Photography — Density measurements — Part 2: Geometric conditions for transmission density
ISO 5-3, Photography — Density measurements — Part 3: Spectral conditions
ISO 5-4:1995, Photography — Density measurements — Part 4: Geometric conditions for reflection density
ISO 2471, Paper and board — Determination of opacity (paper backing) — Diffuse reflectance method
ISO 6196-1, Micrographics — Vocabulary — Part 1: General terms
ISO 6196-2, Micrographics — Vocabulary — Part 2: Image positions and methods of recording
ISO 6196-3, Micrographics — Vocabulary — Part 3: Film processing
ISO 6196-4, Micrographics — Vocabulary — Part 4: Materials and packaging
ISO 6196-5, Micrographics — Vocabulary — Part 5: Quality of images, legibility, inspection
ISO 6196-6, Micrographics — Vocabulary — Part 6: Equipment
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ISO 3334:2006(E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 6196, parts 1 to 6, apply.
4 ISO No. 2 test chart
4.1 Base
4.1.1 General
The test chart shall be made on either an opaque or a transparent base.
4.1.2 Opaque base
The test chart shall be made on a white opaque base with a glossy surface.
Its visual diffuse reflection density, measured in accordance with ISO 5-3 and ISO 5-4, shall be not more
than 0,08. Its opacity, measured as specified in ISO 2471, shall be greater than 85 %. This test chart shall be
positive-appearing.
4.1.3 Transparent base
The test chart shall be made on a non-coloured transparent base having a maximum visual diffuse
transmission density of 0,08, measured in accordance with ISO 5-2 and ISO 5-3. This test chart may be
positive-appearing or negative-appearing.
4.2 ISO No. 2 test pattern
The test pattern shall consist of a numbered group of two sets of five parallel lines at right angles as shown in
Figure 1. The lines and spaces between them shall be of equal width.
The dimensions of lines, expre
...