The YE083 is designed for the evaluation of the halftone reproduction of an electronic camera. Two 11-graduated counter current gray scales are arranged on a gray background(D=0.62) . The gray scales being graduated logarithmically (gamma = 0.45).The output signal of an optimal gamma-corrected camera yields two 11-graduated counter current linear step signals. The contrast range of the gray scale is 40:1.
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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
|
0.86
|
14
|
|
9
|
1.06
|
9
|
|
10
|
1.31
|
5
|
|
11
|
1.65
|
2
|
The density of the white field between the gray scale is D=0.05 (reflectance = 89%).