I also have a question about VueScan. I've been using
this guide to try to orient myself with the (professional trial version) VueScan software. I am using a Pacific Imaging PrimeFilmXA (Reflecta RPS 10M) that I just bought a few days ago from B&H to scan. I will be doing both C41 and black and white.
Currently I am stuck wandering around through menus and trying to find the "Lock film base color" checkbox. I have made sure that the "Lock exposure" is selected.
Is this option gone from the most current version of VueScan, is it only available in the paid version, or am I just missing it somehow?