Epson Photo Plus - PhotoPlus Color Photo Scanner User's Guide download pdf (Page 64)

52 Image Adjustments and Effects

Here’s a summary of the available PhotoPlus image adjustments.

Levels displays a histogram plot of lightness values in the image, from

which you can adjust the tonal range by shifting dark, light, and gamma

values.

Curves displays lightness values in the image using a line graph, and lets

you adjust points along the curve to fine-tune the tonal range.

Color Balance lets you adjust color and tonal balance for general color

correction in the image.

Brightness/Contrast: Brightness refers to overall lightness or darkness,

while contrast describes the tonal range, or spread between lightest and

darkest values.

Shadow/Highlight/Midtone controls the extent of shadows, highlights, and

contrast within the image.

Hue/Saturation/Lightness: Hue refers to the color’s tint—what most of us

think of as rainbow or spectrum colors with name associations, like "blue"

or "magenta". Saturation describes the color’s purity—a totally unsaturated

image has only grays. Lightness is what we intuitively understand as relative

darkness or lightness—ranging from full black at one end to full white at

the other.

Replace Color lets you "tag" one or more ranges of the full color spectrum

that require adjustment in the image, then apply variations in hue,

saturation, and/or brightness to just those color regions (not to be confused

with the simpler Replace Color Tool).

Selective Color lets you add or subtract a certain percentage of cyan,

magenta, yellow, and/or black ink for creating effects.

Channel Mixer lets you modify a color channel using a mix of the current

color channels.

Gradient Map lets you remap grayscale (lightness) information in the image

to a selected gradient. The function replaces pixels of a given lightness in

the original image with the corresponding color value from the gradient

spectrum.

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Epson Photo Plus - PhotoPlus Color Photo Scanner User's Guide Page 64