Epson WorkForce ST-M3000 Monochrome MFP Supertank Printer - Manual (Page 103)

103
Custom Tone Correction Options - Windows
You can select any of the available options in the Tone Correction window to customize the image tone
for your print job.
Gamma
Adjusts the midtone density of the image.
Brightness
Adjusts the overall lightness and darkness of the image.
Contrast
Adjusts the difference between the light and dark areas of the overall image.