Middle left stick

Calculator stick

Patch No Colour R G B
1 Dark skin 115 82 68
2 Light skin 194 150 130
3 Blue sky 98 122 157
4 Foliage 87 108 67
5 Blue flower 133 128 177
6 Bluish green 103 189 170
7 Orange 214 126 44
8 Purplish blue 80 91 166
9 Moderate red 193 90 99
10 Purple 94 60 108
11 Yellow green 157 188 64
12 Orange yellow 224 163 46
13 Blue 56 61 150
14 Green 70 148 73
15 Red 175 54 60
16 Yellow 231 199 31
17 Magenta 187 86 149
18 Cyan 8 133 161
19 White (0.05) 243 243 242
20 Neutral 8 (0.23) 200 200 200
21 Neutral 6.5 (0.44) 160 160 160
22 Neutral 5 (0.70) 122 122 121
23 Neutral 3.5 (1.05) 85 85 85
24 Black (1.5) 52 52 5

A standard colour checker target, such as that seen in the image below, is an essential piece of equipment for many serious photographers. Its accurate colour patches can be used not only to the calibration of a camera but also included in an image to make colour correction much easier. Just place the card somewhere in a picture and use the small patches to correct the final image. The colour target can then be edited out of the image.

Colour tagets are relatively expensive because their colours must be precise. The targets also have a short life because the coloured patches change with time and environmental conditions. It is therefore important to store colour checker targets in accordance with manufacturer's instructions. For the best results, manufacturers tend to suggest replacing a colour checker every two years.

The colours of a standard colour checker target, such as the GretagMacbeth product, are listed in the table on the right.

 

 

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