For those interested in an alternative to Sigma Photo Pro, I just received this message in response to an inquiry. Please note that Irridient already provides support for the SD1.
"The DP1/DP2 Merrill models will both be supported in the next update which should be out soon (weeks).
|Orange-tip Butterfly by anisah|
from Nature's Colour Palette
|Windswept juniper by Kreber|
from Wind power