It is designed to be used with the software QPcolorsoft 501 that can be downloaded free on this site. The colors on the card are mixed separately from pigments and extremely fade resistant. Some of the colors are mixed to resemble the spectral response of colors in real life: Light skin (#18), Dark skin (#17), Sky blue (#25) and Forrest (#15). The seven neutral patches (#4?10) all have an almost straight spectral response. In practice this means the QPcard 201 can be used in almost any light condition with almost any camera, without suffering from metamerism.
The card is self-adhesive making it perfect to place on almost any surface in the subject. The size of the card is 142 x 40 mm (5.6 x 1.6 inch).
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