This is what I have been doing since pretty much day one with NewColor:
All scanner output goes into LAB, no exceptions.
Sharpening is enabled but all values are set to 0.
Both Negative and Positive settings do point to the same Color ICC profile. I have made a variety of profiles scanned off a variety of targets and also with different scanner settings (by that I mean White Point and Exposure ? slider). The rest of controls is disabled.) Keeping the dark point at 5.00 or letting NewColor chose one does not make a difference. So I let NewColor chose it with the added benefit of enabling NewColor to suggest the White point value for me. Which I usually override based on my prefs.
By having multiple profiles I have an extra flexibility to choose one most suitable for the particular emulsion or image content.
BW Negatives are scanned as Color Negatives with inversion done at the time of scanning. In other words, they come out from NewColor the way I expect to see a BW picture - with Whites being White and Blacks Black. Goes into LAB originally. The scanner settings and conversion done for BW Negatives by NewColor are hard to beat, so why bother...
Color negatives are scanned as Color positives. The inversion, conversion to RGB and editing are done in PS.
What's interesting is that for Color Negatives LAB + Invert + "Convert to a profile (RGB)" produces slightly different colors than LAB + "Convert to a profile (RGB)" + Invert
Color Positives are scanned as Color Positives. I keep and edit my Color Positives scans in LAB and only convert them into a particular Printer RGB at the time when I need to print them.
I still feel like the older LinoColor produces better results on darker slides or in darker image areas than NewColor does and sometimes use it for just these images.
SergeyT.
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