Sineimage YE0153 Gray Scale Test Chart (11 steps)
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Model
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YE0153
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Type
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Reflectance/Transparent
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Size
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280 x 157.5mm(A280 & D240)
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Ratio
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4:3
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Material |
Film or HD photographic paper |
The YE0153 grayscale test chart is designed for evaluation of the halftone reproduction of electronic cameras. Two 11-graduated counter current gray scales are arranged on a gray background (D=0.75), the gray scale being graduated logarithmically.
Related to the densities of the gray scales: gamma = 0.45
Related to the reflectance values (brightness): gamma = 2.2 , that being exactly the reciprocal value of gamma = 0.45.
The output signal of an optimally gamma-corrected camera yield two 11-graduates counter current linear step signals. The contrast range of the gray scales is 40 : 1.
The values of the 11-graduated gray scale are as follows:
|
Step |
Density |
Reflectance in % |
|
1 |
0.05 |
89 |
|
2 |
0.13 |
74 |
|
3 |
0.22 |
60 |
|
4 |
0.32 |
48 |
|
5 |
0.43 |
37 |
|
6 |
0.55 |
28 |
|
7 |
0.69 |
20 |
|
8 |
0.88 |
13 |
|
9 |
1.06 |
8 |
|
10 |
1.31 |
5 |
|
11 |
1.65 |
2 |
The density values are based on BaSo4 = 0. Two black fields and a white field are located between the gray scales, the density of the black filed is D > 2.4 (reflectance < 0.5 %). The density of the white filed is D = 0.05 (reflectance = 89.9 %).
Remark: We support Any customized test charts only if you have high resolution image and size.
|
ISO test chart |
sfr test charts |
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24 color cards |
greyscale test charts |
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