Color Assessment Cabinets

Color Proof Station

D65 Light

Color measuring instruments


LED11ET8 G3 940

Haze meter

Hardness tester

Thickness gauges

UV Integrator

Surface Roughness tester

Surface Thermometer


EMF Meter

Range finder

Lux meters


Gray Scale Test Chart(11 steps)

Gray Scale Test Chart(11 steps)

The Gray Scale Test Chart(11 steps) is disigned and used to evaluate the halftone reproduction of electronic cameras. Two 11-graduated counter current gray scales are arranged on a gray background (D=0.75), the gray scale being graduated logarithmically.

Related to the densities of the gray scales: gamma = 0.45

Related to the reflectance values (brightness): gamma = 2.2 , that being exactly the reciprocal value of gamma = 0.45.

The output signal of an optimally gamma-corrected camera yield two 11-graduates counter current linear step signals. The contrast range of the gray scales is 40 : 1.

The values of the 11-graduated gray scale are as follows:

Step Density Reflectance in %
1 0.05 89
2 0.13 74
3 0.22 60
4 0.32 48
5 0.43 37
6 0.55 28
7 0.69 20
8 0.88 13
9 1.06 8
10 1.31 5
11 1.65 2

The density values are based on BaSo4 = 0. Two black fields and a white field are located between the gray scales, the density of the black filed is D > 2.4 (reflectance < 0.5 %). The density of the white filed is D = 0.05 (reflectance = 89.9 %).

Color Rendition Chart (X-Rite ColorChecker)

Scan Reference Chart

Universal Test Target

Critical Flesh Tones Test Chart

Bar Test Chart(IEC 61146)

White Balacing Test Chart

ISO 12233:2014 Edge SFR(eSFR)Test chart

Color Spilled Coins (Dead Leaves) Test Chart

Gray Scale Test Chart(11 steps)

Streaking Measurement Test Chart

Color Bar Test Chart

Gray scale chart

Grid Test Chart

ISO 12233 Enhanced digital camera resolution chart

Standard SFRplus Chart

SFRplus Chart on Photographic Paper QI-SFR10-P-RM

ITE Grayscale Chart II(Gamma = 1)

Black & White Spilled Coins (Dead Leaves) Test Chart

OECF Test Chart (ISO 14524)

ISO 12233: 2014 (eSFR)Photographic chart

ISO-14524 digital camera contrast chart

ISO-15739 digital camera noise test chart

ISO 12233 Digital still-camera resolution chart

Automotive Test Chart

SFRplus Chart: Inkjet on Paper - 4:1 Contrast Ratio

SFRplus Chart: Inkjet on Paper - 10:1 & 2:1 Contrast Ratio

Distortion Grid Test Chart

HDTV Gray Scale Test Chart

ITE Grayscale Chart I(Gamma = 0.45)


Sector Star Test Chart (72 cycles)

Sector Star Test Chart (36 cycles)

HDTV Universal Test Chart

DTV Color Rendition Test Chart

36-Patch Dynamic Range Test Chart

Spectrometer OHSP-350

OHSP350A Light Spectrometer

HPL-200 Flicker illuminometer

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