Accurate camera calibration is a critical step in the capture, processing, and archiving of object properties. To be most useful to the library/museum/archiving community, the patch colors in a camera color characterization target should facilitate accurate data capture from commercial RGB cameras. Target patches can be defined colorimetrically (i.e.: CIELAB) or spectrally (i.e.: reflectance). For some limited situations, colorimetric data is sufficient, but knowing and using the spectral reflectance of the patches affords increased flexibility and accuracy. In this work, the spectral reflectance of the patches are considered in light of the spectral detection properties of cameras. A spectral model will be developed to predict how well two commercial cameras perform when profiled against an available camera target.