Quote Originally Posted by 3Dfan View Post
Can you use a flatbed scanner as a color analyzer?
No. You can use your eyes though.

If the print is cyan, subtract magenta and yellow. print will darken
If the print is magenta, add magenta. print will lighten
If the print is yellow, add yellow. print will lighten
If the print is red, add magenta and yellow. print will lighten
If the print is green, subtract magenta. print will darken
If the print is blue, subtract yellow. print will darken
If the print is dark, shorten the exposure or close the lens aperture
If the print is light, increase the time or open the lens aperture

Generally a color analyzer looks at the color of the light emitted from the enlarger and compares it to a calibrated reference value (that you establish!) and tells you when it matches. For example, you can photograph a grey card. When you make your first print look neutral, you calibrate the analyzer. The next time you have a negative of a different film with a grey card, you can compare the two and set it equal. The alternative is remembering your number for each film and being able to adapt them when necessary. Remember that either way you're on your own making the first print.

You could use a scanner if you scanned and had the computer look at the print but why do that when YOU can look at the print.