Get Sigma DP2 Merrill and Sigma dp2 Quattro at B&H Photo.
This piece follows and complements the similar one with the dp2 Quattro.
This extremely demanding planar target tolerates no errors from a camera system or lens, mercilessly revealing every flaw, but the Sigma DP2 Merrill handles it with ease. In the review of the Sigma DP2 Merrill:
Commentry included on DP2 Merrill vs dp2 Quattro relative performance. Regrettably, the framing did not allow a direct A/B comparison, but the relative results are clear.