I'm using Vuescan to do the scanning and am creating RAW files for the scan of the target hence the settings in the COLOR tab of vuescan shouldn't matter.  I have created printer profiles but am now trying to create a profile for my HP 4850 scanner and am having an issue in Prism.

When you bring the RAW file for the target into Prism, it asks a YES/NO question as to whether you are creating a printer profile.  It instructs you to answer NO, if you are creating a camera or scanner profile.  So, I answer NO.  The RAW file/image of the target is very dark in the viewer and gives poor results.  If I answer YES (for printer profile) the same file comes into the viewer with a much brighter and easier to work with image and also give excellent results as far as X outs, illumination, etc.  What's happening and how should questions be answered to produce a scanner profile?

Screen shot of the bad results attached.

It is some time since I made my scanner profile and had forgotten the detail.s  So I re-made it with the original raw image from the scan of the target using Vuescan.
I got a good result it seems (answered No) because I then scanned a print of some test images and the colours of the resulting image looked good on screen.
The scanner is a Canon 8400F

Terry