Negs Scanning All Red - Microtek SM5

[quantumstate]

Hello,

Using the Microtek Scanmaker5 to scan 110 negatives in the transparency bay.

I've found the Konica negative VX 100 color profile to give the richest colors, but on a set of Kodak negs, suddenly they are scanning almost all red.

I notice that black blacks seem to scan as red, and do not understand why. This scanner is supposed to have a very good dynamic range for its age,and most of my other negs are scanning OK.

Running Debian Linux, Gimp for photo editing, and XSane with the Microtek2 profile for scanning.

Can you advise?

[quantumstate]

OK, new info. I've just found the Bit Depth setting under Standard Options in XSane, and changed it from 8 to 12. I presume this is increasing dynamic range.

Now the majority of the image is visible, although rather dark. There are still alot of pure red regions (255,0,0) though. Is there any way to recover these negs?