The QPcard™ 102 is a gray card for calibrating digital cameras and checking exposure.
The QPcard™ 102 consists of 4 squares of ink applied to a cardboard substrate.
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.
Four measurements were made for each patch and averaged for the spectra. The measurements were made with a GretagMacbeth Spectrolino® equipped with a D65 filter. A black backing was used behind the card. The spectral data was acquired, averaged and analyzed with SpectraShop™ 2.
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