This standard specifies the general test technical requirements for exposure to incandescent light sources and simulated daylight light sources in the general photosensitivity measurement of silver salt photosensitive materials. This standard is mainly applicable to the determination of the photosensitivity of photographic and film photosensitive materials, and other photosensitive materials suitable for exposure to these light sources can also be implemented as a reference. This standard does not apply to radiographic films, aerial photographic films, and other photosensitive materials exposed to special light sources other than tungsten lamps (such as lasers and fluorescence). GB/T 15061-1994 General rules for photosensitivity measurement of silver salt photosensitive materials Part 1 Exposure conditions for samples exposed to incandescent tungsten light and simulated daylight GB/T15061-1994 standard download decompression password: www.bzxz.net

·National Standard of the People's Republic of China
General specifications for gensitometryof silver halide photographic materlal'sPart 1 sensitometric exposure conditions offllms to be exposedd for incandescent tungsten and daylight GB/T 15061-94
This standard adopts the international standard IS0 7589-1984 Photosensitive measurement illumination body - daylight and incandescent tungsten light", and refers to the international standard ISO5800-1987 "Color negative film ISO sensitivity measurement method". 1 Subject content and applicable scope
This standard specifies the general test technical requirements for the use of incandescent light sources and simulated daylight light sources in the general sensitivity measurement of silver photosensitive materials. This standard is mainly applicable to the determination of the photosensitivity of photographic and film photosensitive materials, and other photosensitive materials suitable for exposure using these light sources can also be implemented as a reference.
This standard does not apply to radiographic Line film, aerial film and other photosensitive materials exposed with special light sources other than tungsten lamps (such as lasers, fluorescence).
2 Definitions
2.1 Light source
A specific energy radiator. Such as light bulbs, the sun, the sky. 2.2 Illuminant
Light with a special spectral power distribution. The illuminant is not necessarily directly generated by the light source, and a certain illuminant cannot necessarily be achieved using a light source. 2.3 Relative spectral power distribution
Spectral characteristics of radiation. Described by the relative spectral distribution of certain radiation quantities (such as radiant flux, irradiance). 2.4 Distribution temperature
The ordinate of the spectral distribution curve of the radiation is proportional to the ordinate of the spectral distribution curve of a perfect radiator in the visible region. The thermodynamic temperature of this perfect radiator is called the distribution temperature of the radiation. 2.5 Photographic daylight
The relative spectral power distribution of typical daylight with a correlated color temperature of 5500K. It is the radiation after the sun and sky light are mixed when the sun is about 40° above the horizon on a clear day, marked with Ds. 2.6 Spectral distribution index (SDI)
A three-value mark used to indicate the light source The degree to which the overall color of a photograph is changed relative to ten specific illuminants. The spectral distribution index in this standard evaluates the degree to which its spectral power distribution conforms to the standard by the photographic effect of the illuminant on the three emulsion layers of the average color film. Approved by the State Bureau of Technical Supervision on May 5, 1994 and implemented on February 1, 1995
3 Technical requirements for vision
3.1 Sample balance
GB/T15061-94
The sample should be balanced under the conditions of temperature 23±2℃ and relative humidity 50%±5%. The time required for balance varies depending on the film. 3.2 Sensitometer
Use a non-intermittent dimming sensitometer.
3.3 Quality of radiant energy
Different sensitization illuminants can be selected according to the purpose of the film. This standard specifies the relative spectral power distribution of radiation reaching the exposure plane from two tungsten light sources commonly used in photometry and three illuminants mainly used for sensitization of photographic negative films. The relative spectral power distribution of these illuminants can generally be achieved by adding a light source with appropriate spectral transmission and a selective absorption filter. Any light modulator in the photosensitive instrument that affects the spectral quality (such as dimmer, reflector, light fan, etc.) will affect the relative spectral power distribution. bZxz.net
3.3.1 Daylight illuminants
Daylight illuminants are suitable for daylight type color photographic films and general black and white photographic films, which are designed for photographic daylight and flash exposure. The daylight illuminant is obtained by modulating photographic daylight (Dss) with a standard lens having a specified relative spectral transmittance (r(A)}. Its relative spectral power distribution S> is listed in Table 1. The illuminant with deviations from Table 1 that conform to the provisions of 3.4.3 of this standard is called the daylight illuminant for photometric measurement.
3.3.2 Photographic lamp illuminant
It is suitable for the photometric measurement of type B color film. This type of film is usually exposed with a nominal 3200K halogen tungsten lamp, but its actual effective distribution temperature is only about 3050K. The relative spectral power distribution of this photographic tungsten lamp is obtained from actual measurements in many studios and, after modulation with a standard lens, is the photographic tungsten lamp illuminant. Its relative spectral power distribution is listed in Table 2. The deviations from Table 2 conform to the provisions of 3.4.3 of this standard. The illuminant specified in 4.3 is called a tungsten lamp illuminant for sensitization photography. 3.3.3 Strong light illuminant
Applicable to the sensitization of A-type color film. The relative spectral power distribution of the strong light is represented by a complete radiator of 3400K. The relative spectral power distribution after modulation by a standard lens is listed in Table 3. The illuminant whose deviation from Table 3 complies with the provisions of 3.4.3 of this standard is called a strong light illuminant for sensitization photography.
3.3.4 A light source
CIE standard illuminant A, that is, a tungsten lamp with a distribution irradiance of 2 856K. Its relative spectral power distribution is listed in Table 4. 3.3.5 Printing light source
Distribution irradiance is 3 000K tungsten lamp. Its relative spectral power distribution is listed in Table 5. 3.4 Spectral distribution index
3.4.1 Weighted spectral sensitivity
The weighted spectral sensitivity data used to evaluate various illuminants are listed in Table 1. Table 2 and Table 3 are derived from the spectral sensitivity of the average color film listed in Appendix A. After weighting, the result of calculating the spectral distribution index using the relative spectral power distribution of the standard illuminant in the same table is 0/0/0.
3.4.2 Calculation of spectral distribution index
The calculation steps are as follows
Measure the relative spectral power distribution value of the illuminant every 10nm wavelength, SA; b.
Multiply it with the corresponding red, green, and blue weighted spectral sensitivity W(>) to obtain the spectral response value W(a)·S, and calculate the total photographic response R for red, green, and blue, R=ZW(A)·SA; calculate the logarithm of the total photographic response IgR (take two decimal places): d.
Subtract the minimum value from the three logarithmic response values ​​and multiply by 100 to obtain the spectral distribution index of the illuminant GB/T15061-94
Appendix B is an example of calculating the ISO spectral distribution index of the daylight illuminant for photosensitive measurement. 3.4.3 Tolerance
This standard stipulates that the difference between the red index and the green index shall not exceed 3, and the difference between the blue index and the green index shall not exceed 4, that is, the tolerance is ±4/0/±3.
3.5 Light modulator
The variation range of the spectral diffuse transmittance of any part of the light modulator relative to the film plane within the wavelength range of 400 to 700 mm shall not exceed 5% of the average density within this range or the density value of 0.03 (whichever is greater), and within the wavelength range of 360 to 400 nm, it shall not exceed 10% of the same average density or the density value of 0.06 (whichever is greater). If a step light modulator is used, the minimum size of each level is 5mm×10mm. A circular hole with a diameter of 3mm is used to measure the visual diffuse transmission density. The density difference between different parts of a level shall not be greater than 0.005, the density difference between adjacent levels shall not differ from the nominal level difference by more than 0.01, and the continuous cumulative deviation shall not be greater than 0.03. The system product deviation is calculated according to formula (1): ZAD=(D,-D,)-AD(nm)
Wherein, ZAD is the cumulative deviation of several consecutive levels in the optical module. The maximum difference between the density values ​​of any two levels m and n in the optical module and m should not be greater than 10; D,D,-
nominal level difference value.
For photosensitive materials with high contrast coefficient, the light wedge level difference value used should not be greater than 0.10. For photosensitive materials with low contrast coefficient, the light wedge level difference value used should not be greater than 0.20.
If a continuous dimmer is used, the light density of the dimmer should change evenly with distance and should not be greater than 0.04 per millimeter. 3.6 Exposure time
The exposure time should meet the actual application conditions of the film to be tested. Due to the failure of the reciprocity law, the sensitivity of the film may be related to the exposure time. Therefore, the exposure time should be stated in the product standard. 3.7 Exposure quantity
The uncertainty of the noise light quantity used to determine the film sensitivity should not be less than 0.03 logarithmic units. Table 1 ISO photosensitivity measurement daylight illumination object relative light potential power distribution S incident wave
: 390
Photographic daylight phase
Power distribution
[SO Standard lens
Xiang Harmonic transmittance
ISO photosensitivity measurement
Determine daylight illumination object
SA=D()
Calculate daylight illumination object ISO/SDI weighted spectral sensitivity blue
Photographic daylight phase
Power distribution
ISO standard lens
GB/T15061—94
Continued Table 1
ISO Sensitivity measurement
Relative spectral incidence
Determine daylight illumination
SA=Dsst(A)
Calculate the weighted spectral sensitivity blue for ISO/SDI of daylight illumination
Table 2 Relative spectral power distribution of ISO sensitivity measurement photographic tungsten lamp illumination 51 Relative power distribution of photographic lamp
150 Standard lens
Relative spectral sensitivity
ISO Sensitivity measurement photographic
Photographic lamp illumination
Calculate the weighted spectral sensitivity blue for ISO/SDI of photographic tungsten lamp illumination
Relative power distribution of photographic tungsten lamp
GB/T15061—94
Continued Table 2
ISO Standard lens
Xiang spectral incidence
1S0 Sensitization photography
Shadow lighting object
Calculation photography lighting object ISO/SDI weighted spectral sensitivity blue
Table 3 ISO sensitization Relative spectral power distribution of strong light lighting object
Relative power distribution of strong light
ISO standard lens
Xiang light transmittance
ISO sensitization
Strong light lighting object
Calculation Strong light lighting object ISO/SDI weighted spectral sensitivity blue
Strong light relative
Relative power distribution
ISO standard lens
GB/T15061—94
Continued Table 3
ISO Sensitization
Relative spectral transmittance
High light illumination object
Calculation of weighted spectrum for high light illumination object ISO/SDI blue
Wavelength, nm
Wavelength, nm
GB/T15061-94
Table 4A Relative spectral power distribution of light source
Length, nm
Relative spectral power distribution of printing light source
Wavelength, nm
Wavelength.nm
Wavelength, nm
GB/T15061-94
Appendix A
Average color film spectral sensitivity
(Supplement)
The weighting factors listed in Tables 1, 2 and 3 of this standard are derived from the average color photographic film relative spectral sensitivity data listed in Table A1. Spectral sensitivity is the reciprocal of the spectral energy required to produce a certain density. The values ​​listed in the table are obtained by averaging the data provided by four internationally renowned film companies. Table A1 Average color film spectral sensitivity
(Peak sensitivity of each layer is normalized to 100)
Sg(ca)
GB/T 15061—94
Continued Table A1
Appendix B
ISO spectral distribution index
(reference)
The domestic color temperature conversion glass SSB145 with appropriate thickness can convert the light source with a color temperature of 2856K to obtain the ISO photosensitivity measurement daylight illuminant that meets the requirements of this standard.
Table B1 lists the ISO spectral distribution index values ​​and calculation process of the above-mentioned daylight illuminants. Table B1 Calculation of spectral distribution index
Relative power
Color filter
Transmittance
WA(A)SA
Relative power
Color filter
Transmittance
Total photographic response (R=EW(A)SA)
Total photographic response logarithm (IgR)
Minus 3.30 (minimum value)
Multiply by 100
ISO/SDI
GB/T15061—94
Continued Table B1
We(A)SAa
We()SA
1/2/0 or --1/0/—2
Wr(a)sa
When adding auxiliary
GBT 1506194
This standard was proposed by the Ministry of Chemical Industry of the People's Republic of China. This standard was drafted by the First Film Factory of China Lucky Film Company. This standard was drafted by the First Film Factory of China Lucky Film Company. Shanghai Photographic Film Factory and Xiamen Fuda Photosensitive Materials Co., Ltd. participated in the drafting. The main drafters of this standard were Tang Zhijian, Wang Sugai, Lu Xu, Gao Yuan, and Yu Xinfu.nm
GB/T15061-94
Appendix A
Average color film spectral sensitivity
(Supplement)
The weighting factors listed in Tables 1, 2, and 3 of this standard are derived from the data of average relative spectral sensitivity of color photographic films listed in Table A1. Spectral sensitivity is the reciprocal of the spectral energy required to produce a certain density. The values ​​in the table are obtained by averaging the data provided by four internationally renowned film companies. Table A1 Average color film spectral sensitivity
(Peak sensitivity of each layer is normalized to 100)
Sg(ca)
GB/T 15061—94
Continued Table A1
Appendix B
ISO spectral distribution index
(reference)
The domestic color temperature conversion glass SSB145 with appropriate thickness can convert the light source with a color temperature of 2856K to obtain the ISO photosensitivity measurement daylight illuminant that meets the requirements of this standard.
Table B1 lists the ISO spectral distribution index values ​​of the above-mentioned daylight illuminant and its calculation process. Table B1 Calculation of spectral distribution index
Relative power
Color filter
Transmittance
WA(A)SA
Relative power
Color filter
Transmittance
Total photographic response (R=EW(A)SA)
Total photographic response logarithm (IgR)
Minus 3.30 (minimum value)
Multiply by 100
ISO/SDI
GB/T15061—94
Continued Table B1
We(A)SAa
We()SA
1/2/0 or --1/0/—2
Wr(a)sa
When adding auxiliary
GBT 1506194
This standard was proposed by the Ministry of Chemical Industry of the People's Republic of China. This standard was drafted by the First Film Factory of China Lucky Film Company. This standard was drafted by the First Film Factory of China Lucky Film Company. Shanghai Photographic Film Factory and Xiamen Fuda Photosensitive Materials Co., Ltd. participated in the drafting. The main drafters of this standard were Tang Zhijian, Wang Sugai, Lu Xu, Gao Yuan, and Yu Xinfu.nm
GB/T15061-94
Appendix A
Average color film spectral sensitivity
(Supplement)
The weighting factors listed in Tables 1, 2, and 3 of this standard are derived from the data of average relative spectral sensitivity of color photographic films listed in Table A1. Spectral sensitivity is the reciprocal of the spectral energy required to produce a certain density. The values ​​in the table are obtained by averaging the data provided by four internationally renowned film companies. Table A1 Average color film spectral sensitivity
(Peak sensitivity of each layer is normalized to 100)
Sg(ca)
GB/T 15061—94
Continued Table A1
Appendix B
ISO spectral distribution index
(reference)
The domestic color temperature conversion glass SSB145 with appropriate thickness can convert the light source with a color temperature of 2856K to obtain the ISO photosensitivity measurement daylight illuminant that meets the requirements of this standard.
Table B1 lists the ISO spectral distribution index values ​​of the above-mentioned daylight illuminant and its calculation process. Table B1 Calculation of spectral distribution index
Relative power
Color filter
Transmittance
WA(A)SA
Relative power
Color filter
Transmittance
Total photographic response (R=EW(A)SA)
Total photographic response logarithm (IgR)
Minus 3.30 (minimum value)
Multiply by 100
ISO/SDI
GB/T15061—94
Continued Table B1
We(A)SAa
We()SA
1/2/0 or --1/0/—2
Wr(a)sa
When adding auxiliary
GBT 1506194
This standard was proposed by the Ministry of Chemical Industry of the People's Republic of China. This standard was drafted by the First Film Factory of China Lucky Film Company. This standard was drafted by the First Film Factory of China Lucky Film Company. Shanghai Photographic Film Factory and Xiamen Fuda Photosensitive Materials Co., Ltd. participated in the drafting. The main drafters of this standard are Tang Zhijian, Wang Sugai, Lu Xu, Gao Yuan, and Yu Xinfu.
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