Try to save as DNG and open the files in Capture One.
Itīs soooo much better. You will never use Sinars software again
I have done that. But why do so? I tried with Capture Shop 6.0b12 to:
a) process in Capture Shop, export to TIFF and open in PS CS4 for PP
b) leave DNG as it is and open with Adobe Camera Raw 5.5 and then open in PS CS4 for PP
c) import DNG to Capture One and process to TIFF and then open in PS4 for PP
At the end, all three files opened in PS CS4 look very similar, but if I would have to make some kind of ranking, then would be "c" on the third place, because in the dark (black) arias, there were some color artefacts coming though and that was not the case with "a" and "b". I was impressed with the quality of "b", as I was expecting that the best result is to process with Capture Shop.