Epson Expression 1600 Guia do Utilizador descarregar pdf (Página 26)

Scanning Basics

1-17

R4C0910

long.bk Rev. C

A5 size BASIC.FM

1/12/00 Pass 2

Proof Sign-off:

M.Fujimori _______

J.Hoadley _______

Channels

Click an option button under channels to select the color whose

tone curve you want to adjust. When the master channel at the

top is selected, your adjustments affect all three colors. Selecting

one of the other channels allows you to adjust red, green, or blue

only.

Tone curve editor

Moving the mouse pointer into the tone curve editor causes it to

change to a finger. Use this pointer to drag any of the five points

in the curve and change its shape. The x-axis of the curve is the

brightness of the original (input values) while the y-axis is the

brightness of the scanned image (output values).

To change the tone curve back to its default, select

Linear

in the

tone correction list.

Output values

These are the current values for output data in accordance with

the current locations of the points inside the tone curve editor.

These values change when you drag points in the tone curve

editor, or you can enter in values here to change the shape of the

tone curve. Each value can be adjusted within the range of 0 to 255.

Note:

❏

Each output value name has a check box to the left of it. Highlight

and Shadow are always selected, but you can select or clear 1/4 Tone,

Midtone, and 3/4 Tone by clicking their check boxes.

❏

When a value’s check box is clear, its point on the tone curve editor

automatically shifts to smooth out the tone curve when one of the

other points is moved.

❏

When a value’s check box is selected, it means that its point is fixed

and it will not shift when other points are moved.

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Epson Expression 1600 Guia do Utilizador Página 26