Microtek ScanWizard EZ Reference Manual page 60

To choose your scan material:
• Choose the Scan Material command in the Preferences menu. From the
submenu that appears, select your scan material; a check will appear next to
the selected option.
• Alternatively, you can click the Scan Material (
the correct scan material from the drop-down menu that appears.
If you are scanning negatives or positives, make sure you specify the correct
scan material, or you will get inaccurate scanning results.
20 Microtek ScanWizard EZ - Professional Mode Reference Manual
)button and then choose