Canon CanoScan D1250U2F User Manual page 39

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Table of Contents

chapter 3

What is on the

screen?

Contents

Glossary

Index

Eyedroppers (Black-point, Mid-point, White-point)

Click one of the three eyedroppers then click the portion of the image in

the Preview Area that you want to sample, or enter values in the text boxes,

or drag one of the three triangles at the bottom of the graph to adjust the

value. The shape of the tone curve and histogram changes to reflect the

current Histogram setting for the current Channel, and the image in the

Preview Area changes to reflect the adjustment.

• A White-point value must be larger than a Black-point,

and a Mid-point value must be between the Black-point

and White-point.

Note

Reset

Resets the default values:

• Black-point: 0

• Mid-point:

• White-point: 255

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