Seth Baldwin

There are quite a few labs around now which process ecn-2 under aim tolerances for still photography. It's fairly inexpensive, your best bet would be to run these tests first hand with a pipeline you like. The density metric used by the scanner will have an impact on the final representation of colors, the only modern densitometric calibration standard I know of is APD, however a lot of scanner manufactures employ their own printing density metric to some cineon log like encoding, so unless the scanner is calibrated to a known standard, the output can vary quite significantly from lab to lab. But on the other hand, the gamma of the scanned negative can be quite consistent regardless of the density metric employed. Some labs may also supply a print emulation 3D LUT, which can be quite a different representation as well. So best to just pick a process you like and use that for reference.