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TE165 A 11-STEP GRAY SCALE TEST CHART 16:9 / BT.709 Reflectance

TE165 A 11-STEP GRAY SCALE TEST CHART 16:9 / BT.709 Reflectance is designed for evaluation of the halftone reproduction of electronic cameras.
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Date:2018-02-03  Browse:
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TE165 A 11-STEP GRAY SCALE TEST CHART 16:9 / BT.709 Reflectance 

TE165 A 11-STEP GRAY SCALE TEST CHART 16:9 / BT.709 Reflectance

TE165 A 11-STEP GRAY SCALE TEST CHART 16:9 / BT.709 Reflectance

 
TE165 A 11-STEP GRAY SCALE TEST CHART 16:9 / BT.709 Reflectance 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 ≈ 0.56), the gray scale corresponds to the ITU recommendation BT.709.
 
 
The output signal of an optimally gamma-corrected camera according to BT.709 generates two counter current, linear step signals.
 
The contrast range of the gray scale is 40 : 1.
 
 
The values of the 11-graduated gray scale are as follows:

Step

灰阶等级

Density

Remission in %

Video signal for BT.709 in %

Video signal for gamma 0.45 in %

1

0.05

89

100

100

2

0.13

74

91

92

3

0.22

60

82

84

4

0.32

48

73

75

5

0.43

37

64

67

6

0.56

28

55

59

7

0.70

20

46

51

8

0.88

13

37

43

9

1.08

8

28

35

10

1.34

5

19

26

11

1.64*

2

11

19

 

*The production process for reflective charts allow a maximum printed density of 1.64. The target value for the darkest step is 1.70.                                                Therefore the distance of the last step differ slightly.

 
Two black fields and a white field are located between the gray scales. The density of the black fields in the middle is D > 3 (remission < 0.1 %), the white field between has a density of 0.05 (remission 89.9%).
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