You Are Here : Home >> Products >> Resolution Test Chart >> TE223 A Gray Scale Test Chart Reflectance

TE223 A Gray Scale Test Chart Reflectance

TE223 A Gray Scale Test Chart Reflectance is designed for evaluation of the halftone reproduction of electronic cameras.
More Photos:
Date:2018-02-03  Browse:
  • Introduction
  • Product Software

TE223 A Gray Scale Test Chart Reflectance

TE223 A Gray Scale Test Chart Reflectance

TE223 A Gray Scale Test Chart Reflectance

TE223 A Gray Scale Test Chart Reflectance is designed for evaluation of the halftone reproduction of electronic cameras. 
 
Two 13-graduated counter current gray scales are arranged on a gray background (D = 0.75), the gray scales being graduated logarithmically. Related to the densities of the gray scales: gamma = 0.45, related to the transmission values (brightness): gamma = 2.2, that being exactly the reciprocal value of gamma = 0.45. The output signal of a optimally gamma-corrected camera yields two 13-gratuated counter current linear step signals.
 
The contrast range of the gray scales is 200 : 1.
 
The values of the 11-graduated gray scale chart are as follows:

Step

Density

Reflectance in %

1

0.05

89

2

0.13

74

3

0.21

62

4

0.30

50

5

0.40

40

6

0.51

31

7

0.63

23

8

0.78

17

9

0.95

11

10

1.15

7

11

1.41

4

12

1.77

2

13

2.35

0.5

 
The density of the white field between the gray scale chart is D = 0.05 (reflectance = 89 %).
 
Keywords: Gray Scale Test Chart, grayscale chart, grayscale test chart
4/F, Building 8, Nangang Second Industry Zone, Xili, Nanshan District,
Copyright © 2011-2018 Shenzhen 3nh Technology Co., Ltd.. All Rights Reserved.