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You Are Here : Home >> Products >> Image test chart >> Grey Scale Card >> LINEAR GRAY SCALE TEST CHART

LINEAR GRAY SCALE TEST CHART

Two 11-graduated counter current gray scales are arranged on a gray background (D≈0.65), the gray scales being graduated linear. Related to the densities of the gray scales: gamma = 1. The contrast range of the gray scales is 40:1.
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Date:2017-06-20  Browse:
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LINEAR GRAY SCALE TEST CHART

REFLECTANCE

 

Two 11-graduated counter current gray scales are arranged on a gray background (D≈0.65),

the gray scales being graduated linear. Related to the densities of the gray scales:

gamma = 1. The contrast range of the gray scales is 40:1.

 

The values of the 11-graduated gray scales are the follows:

 

Step

Density

Reflectance in %

1

0.05

89

2

0.10

80

3

0.14

72

4

0.20

63

5

0.26

54

6

0.34

45

7

0.43

37

8

0.55

28

9

0.71

19

10

0.96

11

11

1.65

2


The density of the white filed between the gray scales is D = 0.05 (reflectance = 89%).