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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