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QPcard™ 202 and 203

The QPcard™ 202 and 203 are color charts for calibrating and profiling digital cameras.

Description

The QPcard™ 202/203 consists of 35 ink patches applied to a paper substrate in 5 rows of 7 patches. There are 9 primary colors, 12 secondary colors, 7 pastel colors and a 7 step grayscale.

The QPcard™ 202 is 170 x 240 mm (6.7 x 9.5 in.). The QPcard™ 203 is a smaller version of the QPcard 202, at 90 x 130 mm (3.5 x 5.1 in.). The QPcard 203 is also offered as the QPcard 203 book, which includes an 18% gray card with both cards mounted in a booklet format about the same size as a passport, 95 x 135 mm (3.75 x 5.3 in.). The book has a ribbon attached under the gray card to be used for hanging or attaching the book in the scene. An elasticized band is attached to the book's outside for securing the book closed.

Notes

The ink appears to be silk screen printed onto the substrate.

The paper substrate contains a fluorescent brightener but it does not appear to effect the patches.

The paper substrate is not opaque, making the choice of the backing very important since it can be expected to influence the patches.

Data

QPcard 203 book
  CIE 1976 L*a*b*, D50, 2°
Name L* a* b*
Patch R1C1
81.05
6.70
78.79
Patch R1C2
76.71
27.21
72.77
Patch R1C3
68.67
42.30
59.22
Patch R1C4
83.98
-23.82
-6.29
Patch R1C5
79.92
-21.09
14.17
Patch R1C6
83.78
-10.69
32.31
Patch R1C7
88.97
4.94
39.91
Patch R2C1
54.74
27.76
-24.47
Patch R2C2
42.61
50.08
21.72
Patch R2C3
49.72
-48.37
14.07
Patch R2C4
42.94
-17.34
-34.46
Patch R2C5
70.03
-1.09
56.08
Patch R2C6
53.47
-30.94
-23.11
Patch R2C7
83.29
21.54
31.73
Patch R3C1
53.36
33.67
-17.26
Patch R3C2
43.23
54.05
14.56
Patch R3C3
53.57
-46.41
24.72
Patch R3C4
40.85
2.90
-46.05
Patch R3C5
68.81
-11.05
53.39
Patch R3C6
56.01
-40.93
-11.58
Patch R3C7
81.64
25.09
15.18
Patch R4C1
53.29
36.10
-6.25
Patch R4C2
41.81
48.40
2.17
Patch R4C3
50.02
-37.22
29.65
Patch R4C4
37.92
13.87
-43.11
Patch R4C5
63.02
-22.67
40.91
Patch R4C6
53.78
-39.18
-1.48
Patch R4C7
78.15
16.97
-9.01
Patch R5C1
93.74
-0.42
2.30
Patch R5C2
83.25
-0.24
1.85
Patch R5C3
67.37
0.08
1.17
Patch R5C4
57.97
-0.16
-0.08
Patch R5C5
43.13
-0.02
0.56
Patch R5C6
33.97
0.24
1.00
Patch R5C7
29.09
0.45
0.15
Gray Card
46.17
-0.51
-0.65

Two charts were measured and averaged for the table data. The measurements were made with an X-Rite i1Pro. The spectral data was acquired, averaged and analyzed with SpectraShop™ 4.

Updated 15.7.2012

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