Thank you to everyone that has responded. I was able to do a few more tests this week. @CLetelierG @mightimatti Thanks for the tip off about the dirty mirror and cleaning instructions. I cracked the scanner open and yes, the mirror had some dust built up. Not excessive but dusty nonetheless. Here is a before and after of the scan with no ISRD or any sharpening:
here is the image with ISRD applied. Left is pre mirror cleaning, right is post mirror cleaning:
@jeffstev I went back and reshot the negative with my D850/60mm combo to make sure focus was tack sharp. Here is a side by side, DSLR on the left (60mm F/8, ISO 64, 1/8 sec), Coolscan on the right (ISRD, ME turned on):
@Ektachrome @jorismak I think your observations are spot on, the scanner is just too dang sharp! Here is the sample image with some noise reduction in LC dialed in (luminance 10, detail 10, color 10, all other values 0):
Also film speed seems to be a factor at hand, the sample photo was shot on portra 400. here is a scan of some portra 160, IRSD on and ME on, no LC noise reduction:
the noise is way less present with the iso160 film.
So long story short, I am happy with the coolscan over the v850, it just required a little bit of troubleshooting to get there.