I use a V500 scanner with Epson Scan 5.1.1, and usually have no problem scanning and getting a large dynamic range from various types of films and exposure choices.
The only exception is with cross-processed film (E-6 processed with C-41 chemistry), which my scanner always overexposes, even when the automatic adjustments are turned off.
This is a photo of the negative strip, taken with my iPhone 12 and inverted in photoshop.
This is the same photo, scanned by Epson scan.
I tried changing settings in the Epson app, scanning as Positive film then inverting, nothing seems to work.
Am I scanning these cross-processed negatives wrong?
Note: Please do not place these images as inline images when editing the question, you do not have the right to do so. Thanks.