1、BRITISH STANDARD BS ISO 12608:1996 Cinematography Room and surround conditions for evaluating television display from telecine reproduction ICS 37.060.10BSISO 12608:1996 This British Standard having beenprepared under the directionof the Consumer Products and Services Sector Board, was published und
2、er theauthority of the Standards Board and comes into effect on 15 April 1997 BSI 12-1998 ISBN 0 580 27221 4 National foreword This British Standard reproduces verbatim ISO12608:1996 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Com
3、mittee CPW/36, Cinematography, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and Europe
4、an developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue unde
5、r the section entitled “International Standards Correspondence Index”, or using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct appli
6、cation. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theISO title page, pages ii to iv, pages 1 and 2, an inside back cover and abackcover. This standard ha
7、s been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on theinside front cover. Amendments issued since publication Amd. No. Date CommentsBSISO 12608:1996 BSI 12-1998 i Contents Page National foreword Inside front cover Foreword i
8、ii Text of ISO 12608 1ii blankBS ISO12608:1996 ii BSI 12-1998 Contents Page Foreword iii 1 Scope 1 2 Colour monitor characteristics 1 3 Observer viewing characteristics 1 4 General conditions Viewing area decor 1 5 Surround characteristics 1 6 Viewing room lighting characteristics 1 Figure 1 Single-
9、monitor surround area 2 Figure 2 Two-monitor surround area 2BS ISO12608:1996 BSI 12-1998 iii 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
10、 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
11、 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires appro
12、val by at least 75% of the member bodies casting a vote. International Standard ISO12608 was prepared by Technical Committee ISO/TC36, Cinematography. AnnexA of this International Standard is for information only. Descriptors: Cinematography, motion-picture film, videogram, television systems, colou
13、r television, display, tests, testing conditions, viewing conditions.iv blankBSISO 12608:1996 BSI 12-1998 1 1 Scope This International Standard specifies the environmental and surround conditions that are required in standard definition television and video programme review areas for the consistent
14、and critical evaluation of television signals and other video programme material, using different technical facilities on properly aligned colour-picture monitors. This International Standard also specifies ambient lighting requirements for viewing rooms, the size of surround and background, colour
15、monitor characteristics and observer viewing parameters. It is designed to provide for repeatable colour grading or correction and the rendering of subjective assessments. 2 Colour monitor characteristics Parameters for the monitor screen at reference white (100IRE) are as follows: a) a chromaticity
16、 of illuminant D 65 ; b) a screen luminance of 120cd/m 2 17cd/m 2for60Hz television systems; c) a screen luminance of 80cd/m 2 5cd/m 2for50Hz television systems. This difference in screen reference white levels is to take account of the increased possibility of flicker effects, under certain circums
17、tances, in 50Hz television systems. 3 Observer viewing characteristics 3.1 The observer shall have normal colour perception. 3.2 Adequate time shall be allowed for visual adaptation to the viewing environment. 3.3 The observers distance from the monitor screen(s) shall be4 to 6times the picture heig
18、ht. 3.4 The observer(s) shall view the monitor screen(s) at a preferred angle of 0 5, but no greater than 15, in both the horizontal and vertical planes, from the perpendicular to the mid-point of the screen(s). 4 General conditions Viewing area decor 4.1 The viewing area decor within the field of v
19、iew shall have a generally neutral matte impression, without dominant colours. 4.2 Surface reflectances shall be non-specular and shall not exceed 10% of the peak luminance value of the monitor white. Surfaces which may be reflected in the monitor screens shall have a non-specular surface reflectanc
20、e of less than15%. 4.3 Desk and control console surfaces shall have a generally neutral matte finish without dominant colours or specular features. 5 Surround characteristics 5.1 The wall surrounding the monitor(s) shall be either illuminated or reflective, and present a visually neutral surface. Il
21、luminated or reflected light from the surround shall closely match D 65,and shall have a peak luminance of 12cd/m 2for 60Hz television systems, or 8cd/m 2for 50Hz television systems, which are nominally 10% of the monitor screen(s) reference white (seeclause2). A gradation in intensity of the surrou
22、nd, from top to bottom or bottom to top, is more pleasing. 5.2 The surround shall have an area of eight times the monitor screen mask (for a single monitor), or five time the monitor screen masks (for twin monitors). Monitors shall be placed in the centre of the surround (seeFigure 1 and Figure 2).
23、6 Viewing room lighting characteristics 6.1 All light sources used during picture assessment or adjustment shall have a colour temperature closely matching the monitor screen, i.e. D 65(seeclause2). Ambient reflections from an unpowered monitor shall be at the lowest possible level, and shall not ca
24、use perceptible impairment from the viewing position. 6.2 Desks or control consoles where scripts or editing instructions are to be read shall be illuminated to a light level of approximately 100lx. Illumination on general working surfaces shall be at30lx to 40lx.BSISO 12608:1996 2 BSI 12-1998 Figur
25、e 1 Single-monitor surround area Figure 2 Two-monitor surround areaBS ISO 12608:1996 BSI 12-1998 Annex A (informative) Bibliography 1 ISO 291O:1990, Cinematography Screen luminance for the projection of motion-picture prints in indoor theatres and review rooms. 2 ISO 6035:1983, Cinematography Viewin
26、g conditions for the evaluation of films and slides for television Colours, luminances and dimensions. 3 ISO 6036:1996, Cinematography Colour motion-picture films and slides for television Density specifications.BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | |
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