When I shoot films, I have been mainly shooting B&W and slides. I shoot mainly in XPan, 120 and 4x5 format. Haven't shot straight 35mm for probably 8 years.

I have a Jobo and rotary process all my films. I then scan using a LS-9000 (XPan or 6x7) or V700 (617 or 4x5)

Last few months, I tried color films, the XPan and 120 seem not to as sharp as the slides and B&W. The negs look pretty good exposure wise, and I am precise with water temperature and timing. I use a Kodal color thermometer and not the Jobo builtin temperature gauge. For testing purpose, I even have a lab processed one of the rolls and the results are similar.

So are color films (Portra 400) inherently less sharp than slide film or may be I am comparing apples to oranges or my process still need more tweaking?

I use the Arista C41 for color films, divided Pyrocat for B&W, and Tetenal E-6 for slides.