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Made in China Cheap HDTV Gray Scale Test Chart

The YE 0223 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).

  • weight:100.000 g(g)
  • Item:YE0223
  • Brand:3nh
  • Measuring unit :pc
  • Price: ¥0
Made in China Cheap HDTV Gray Scale Test Chart

The YE 0223 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 are as follows:

 
StepDensityReflectance in %
10.0589
20.1374
30.2162
40.3050
50.4040
60.5131
70.6323
80.7817
90.9511
101.157
111.414
121.772
132.350.5
 

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