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GB/T 11500-2008: Photography -- Density Measurement -- Part 2: Geometric conditions for transmission density
Status: Valid GB/T 11500: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 11500-2008 | English | 254 |
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Photography -- Density Measurement -- Part 2: Geometric conditions for transmission density
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GB/T 11500-2008
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| GB/T 11500-1989 | English | 279 |
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Geometric conditions for measuring transmission density
| Obsolete |
GB/T 11500-1989
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PDF similar to GB/T 11500-2008
Basic data | Standard ID | GB/T 11500-2008 (GB/T11500-2008) | | Description (Translated English) | Photography -- Density Measurement -- Part 2: Geometric conditions for transmission density | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G80 | | Classification of International Standard | 37.040.20 | | Word Count Estimation | 13,132 | | Date of Issue | 2008-06-18 | | Date of Implementation | 2009-02-01 | | Older Standard (superseded by this standard) | GB/T 11500-1989 | | Quoted Standard | GB/T 11501; ISO 5-1-1984; ISO 7724-1 | | Adopted Standard | ISO 5-2-2001, IDT | | Regulation (derived from) | National Standard Approval Announcement 2008 No.10 (Total No.123) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the diffuse transmission density measurements and f/4. 5, f/1. 6 transmission density of the projection geometry. Diffuse transmission density is mainly used in transparent illuminator (check sheet box) to watch the video, contact with the printed image and diffuse illumination system with the projected image measurement. Mainly used to measure the density of the image projection with a condenser. Although the density measurement methods specified in this standard is mainly used for image measurement, but also often applied to the measurement filters and other transparent materials. | GB/T 11500-2008: Photography -- Density Measurement -- Part 2: Geometric conditions for transmission density
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
. Photography Density Measurement Part 2. Geometric conditions for transmission density
ICS 37.040.20
G80
National Standards of People's Republic of China
GB/T 11500-2008/ISO 5-2.2001
Replacing GB/T 11500-1989
Photographic density measurements - Part 2.
Geometric conditions for transmission density
(ISO 5-2.2001, IDT)
Posted 2008-06-18
2009-02-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard is identical with ISO 5-2.2001 "photographic density measurements - Part 2. Geometric conditions" (in English).
This standard is equivalent translation ISO 5-2.2001.
For ease of use, this standard does the following editorial changes.
a) "this International Standard" be replaced by "this standard";
b) use a decimal point instead of a decimal comma ",". ",";
c) Delete ISO 5-2. Preface 2001;
d) Normative references introductory phrase file to GB/T 1.1-2000 specified key words.
This standard replaces GB/T 11500-1989 "photographic transmission density measurement geometry."
This standard compared with GB/T 11500-1989, includes the following changes.
--- The standard name according to international standard name translated from the original "photographic density measurement geometry" to "photographic density measurements
Part 2. Geometric conditions for transmission density ";
--- Increasing the foreword and introduction;
--- Justifying the introduction of "opal glass" instead of "sphere" for the diffuser and the difference between the transmission ratio and the transmission factor and the like;
--- In order to more clearly understand the standard content of the "scope" This section has been clearly defined; at the same time expanding the application
Range (Excerpts Chapter 1, 1989 version of Chapter 2, paragraph 2.2);
3.1
The ratio of the flux through the sample and the sample throughput measured from the measuring instrument sampling holes away.
T = ΦτΦ j
Where.
Φτ --- transmission flux;
Φ j --- aperture flux.
3.2
The number of transmission factor to take reciprocal base 10
DT = log10 1T = log10
Φ j
Φτ
3.3
Lighting or receiving system diffusive measure.
Note. See Appendix A.
GB/T 11500-2008/ISO 5-2.2001
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