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11-Steps Gray Scale Test Chart

11-Steps Gray Scale Test Chart Instructions Operating Manual 11-Steps Gray Scale Test Chart PDF
This 11-Steps Gray Scale Test Chart Instrument are Certified with
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The YE0165 is designed for evaluation the halftone reproduction of 16:9 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 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%).
Recommended usage:

Adjust the aperture until the lightest patch reaches 100% video signal at the waveform monitor. With an optimally corrected camera according to ITU recommendation BT.709 the darkest patch will reach 10% signal level.

When using this chart with a gamma correction of 0.45 the video signal level for each step will change as listed in the table above.

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FAQs About  Grayscale Charts

Powder paint gloss levels are classified as:

● Flat: 0–10 GU

● Satin: 11–40 GU

● Semi-gloss: 41–70 GU

● Gloss: 71–85 GU

● High Gloss: 86+ GU
 

These are measured at a 60° angle for standardization.


To determine haze, haze meters are used in multiple industries such as plastic, glass, film, coating, and displays. This ensures that all optical quality of the product is in the appropriate specification, including aesthetic compliance and meeting the intercontinental quality standards.


The ΔE (Delta E) formula of the CIELAB color space is usually used to measure color difference. The difference is measured in a colorimeter or spectrophotometer to gauge the level of perceptibility of the difference between two samples in terms of L*a*b*.


You can choose a colorimters depending on the substrate you are measuring the color of, whether it is opaque, translucent or transparent. In short, you can consider the following factors for choosing the right 3NH colorimeter for your needs: Sample Opacity, Physical Form, Optical Properties needed, Measurement Methods required, Scales and Indices needed, Instrument Standards Conformance (ASTM/ISO/Other), Instrument Geometry, Instrument Performance, Location (laboratory, portability, in-process) and Sample Handling requirements.

By systematically addressing these factors, you can select a colorimeter that optimizes accuracy, efficiency, and value for your specific application.Learn more from our ultimate guide on colorimeter selection. If unsure, consult the 3NH manufacturer for personalized recommendations based on your sample and workflow.


Gloss level is not given out in percentage but in gloss units (GU). In practice, however, 100 GU is considered 100 percent reflective. To contrast visually, the 20-40 GU is a low-gloss surface, and 85 or more is almost 100 percent mirror-like reflection.


a. If this phenomenon occurred, it means the battery power is not enough. You need to charge the battery.

b. When charge the battery, please insert the battery to the instrument, and plug in the adapter to charge the battery. After 5 minutes, the instrument can be turned on.

c. If the instrument still cannot be turned on after charging 5 minutes, you can pull out the adapter and re-plug in to check it. Or repeat this operation.

d. If the instrument still cannot be turned on after charging 5 minutes, you can turn off the colorimeter and turn on it again to check it. Or repeat this operation.

e. If you have tried all the methods above but the colorimeter still cannot be turned on, please change the battery.

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