Summary: A Sigma DP2 Merrill and dp2 Quattro were used to photograph a 24-patch ColorChecker Classsic. Image processing (X3F and TIFF) was limited to global adjustments to white balance and exposure. Color reproduction of each of the 18 non-gray-scale patches was evaluated by comparison to the published ColorChecker (2005) L*a*b* coordinates. For both cameras, portrait color mode produced the best match to the ColorChecker. Overall, the Merrill images were a closer match to the reference values, although the difference between cameras was generally not large.
Key words: Sigma Quattro, Sigma Merrill, DP2, dp2, ColorChecker, Sigma Photo Pro, BabelColor, LCH color model