Epson Macintosh - Manual (Page 69)

Shadow Comparison. Allows you to compare three or five
image samples of varying shadow intensity or color. The
middle sample reflects the current shadow setting.
Sharpness Comparison. Allows you to compare three or five
image samples of varying sharpness. The middle sample
reflects the current sharpness setting.
Threshold Comparison. Allows you to compare three or five
image samples of varying black and white contrast. The
middle sample reflects the current threshold setting.
Gamma Correction and Gamma Correction Comparison.
Opens the Gamma Correction dialog box, which contains
settings for adjusting gamma levels when you want to alter
the midtones, highlights, and shadows in an image. This
lets you more accurately modify an image to reflect the
tones in the original and bring out the details in shadow
areas.
The Gamma Comparison icon allows you to compare three
or five image samples of varying tonal quality. The middle
sample reflects the current gamma adjustment.
Icon Glossary 3