Epson Perfection V500 - Manual (Page 86)

Home or Professional Mode
If the Mode box in the upper right corner of the window is set to Home or
Professional Mode, see Selecting Basic Settings for instructions.
Note:
In Full Auto Mode, you can scan only 35mm color negative film strips or
color positive slides. If you want to scan other types of film, change to
Home or Professional Mode.
If you want to change the scan mode, see
Changing the Scan Mode .