Qpcard 101 v2 is the new improved version of Qpcard 101. It has three patches with perfectly neutral dark gray, mid gray and white colors. The Cie L*a*b values are 35*0*0, 48*0*0 and 95*0*0. The spectral respons of the three colors is almost perfect straight, meaning there will be no problems with metamerism at all. The colors are extremely fade resistant. The main purpose with the card is to use the gray patch for neutral gray balancing of the image. The gray patch is reflecting 18 % of the light, making it useful also for exposure purposes. Since the white patch is free from fluorescent whitening agents, it is perfect for custom white balance setting of your camera before shooting. There is a millimeter reference scale on the card.

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It has been developed together with experienced users of QPcard 101. QPcard 102 is much bigger, 243 x 170 mm (9.6 x 6.7 "), and in thick cardboard quality. It has four fields, for better distribution along the gray scale. Furthermore we have skipped the black and replaced it with a dark gray field. Black is difficult to change anyway, so four fields not to close to the end points of the tonal scale makes a much better job. The reason why we choose four fields is that Adobe Photoshop has possibility to correct the balance using four points under "Curves".

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