UMAX Technologies PowerColor Bedienungsanleitung

Table of Contents iii

Table of Contents

Preface

Introduction ........................................................................................................xi

PowerColor ColorSync Separator ........................................................................xi

PowerColor Press Edition ..................................................................................xii

How to Use This Manual ..................................................................................xiii

Typographical Conventions ..............................................................................xiii

Related Documentation ....................................................................................xiii

Chapter 1: Installation

Configuration Requirements ............................................................................1-1

Host Computer ............................................................................................1-1

Scanner ........................................................................................................1-1

Setting Up and Installing PowerColor..............................................................1-2

Installing on an Apple Macintosh..............................................................1-2

Configuring Your Monitor for PowerColor............................................1-2

Installing the PowerColor Software ......................................................1-3

Assigning Memory to PowerColor..........................................................1-5

Installing on a Windows PC........................................................................1-6

Configuring Your Display ......................................................................1-6

Installing the PowerColor Software ......................................................1-6

iv PowerColor User Guide

Chapter 2: Getting Acquainted

Overview of the Scanning Process ....................................................................2-2

Launching PowerColor ....................................................................................2-2

Setting Preferences ............................................................................................2-3

Changing Screen Gamma ................................................................................2-6

Making an Overview..........................................................................................2-7

Image Selection Tools ......................................................................................2-8

Creating Regions ..............................................................................................2-9

Images and Memory..................................................................................2-10

Region Names............................................................................................2-11

Working with Regions ....................................................................................2-12

Activating Regions ....................................................................................2-12

Adjusting the Queue Manager Window ....................................................2-13

Manipulating Regions in the Queue Manager ........................................2-14

Saving the Queues ....................................................................................2-14

Previewing Regions....................................................................................2-15

Dynamic Operations in the Queue Manager............................................2-16

Transforming Images................................................................................2-16

Viewing an Image in Detail ......................................................................2-17

Updating Images ............................................................................................2-18

Updating Automatically ............................................................................2-18

Updating Manually....................................................................................2-18

Saving and Recalling Settings........................................................................2-19

Table of Contents v

Chapter 3: Correcting Images with

PowerColor Photo/RGB Mode

Using the RGB Probe ........................................................................................3-2

RGB Probe Window Configurations............................................................3-2

Setting Highlight and Shadow..........................................................................3-4

Using the Gray Eyedropper..........................................................................3-7

Adjusting Tonal Range in Basic Mode ............................................................3-8

Adjusting Tonal Range in Expert Mode..........................................................3-10

Using the RGB Controls ..................................................................................3-12

Adjusting Colors ........................................................................................3-12

Correcting Colors..................................................................................3-13

Manipulating the Histograms ............................................................3-14

Using the ColorSync Profiles ..........................................................................3-15

Storing ColorSync Profiles ..................................................................3-15

Using Profiles ......................................................................................3-16

vi PowerColor User Guide

Chapter 4: Correcting Images with

PowerColor Press/CMYK:

Production Mode

Understanding the CMYK Probe........................................................................4-1

Probe Location ............................................................................................4-1

Displaying Density Values............................................................................4-2

Displaying Color Plates................................................................................4-2

CMYK Values Before and After Corrections..................................................4-2

Selecting Fixed Reference Points ................................................................4-3

Using Production Color Controls......................................................................4-4

Production Mode Workflow ........................................................................4-4

Setting Highlight and Shadow Points ..............................................................4-6

Setting Dot Limits..............................................................................................4-9

Setting an Image’s Tone..................................................................................4-10

Adjusting Color in Tone Regions ........................................................4-10

Correcting Color Casts..........................................................................4-10

Setting Multiple Gray Points................................................................4-11

Making Selective Color Corrections................................................................4-12

Selecting Colors to be Corrected ..........................................................4-12

Using the Sliders to Correct Individual Colors....................................4-13

Table of Contents vii

Chapter 5: Correcting Images with

PowerColor Press/CMYK:

Expert Mode

Calibrating PowerColor Press ..........................................................................5-1

Understanding Calibration..........................................................................5-1

Preparing the Target for Output..................................................................5-2

Setting Up the Gray Balance ............................................................................5-5

Editing the Gray Balance Table ..................................................................5-6

Controlling Dot Gain ........................................................................................5-7

Setting Dot Gain ..........................................................................................5-7

Using Tone Controls........................................................................................5-10

Removing Color Casts..........................................................................5-10

Tone Curves ..........................................................................................5-11

Using the Gray Eyedropper ..................................................................5-12

Setting Highlight and Shadow Points ............................................................5-13

Automatically ......................................................................................5-13

Manually ..............................................................................................5-13

Using Gradation Controls ..............................................................................5-16

Understanding Gradation..........................................................................5-17

Working with Gradation Curves................................................................5-20

Using Negative Slope Detection ................................................................5-21

Working with the Gradation Table............................................................5-22

Determining Black Generation ................................................................5-23

viii PowerColor User Guide

Chapter 6: Unsharp Masking

Applying Unsharp Masking ..............................................................................6-1

Controlling USM in Tonal Regions ............................................................6-2

Manually Adjusting the Region Control Bars ......................................6-4

Controlling Edges between Tonal Regions............................................6-4

Using the Unsharp Masking Curve ............................................................6-5

Applying Descreening........................................................................................6-6

Descreening options ....................................................................................6-6

Customizing the Descreening Function......................................................6-7

Chapter 7: Scanning Images to Disk

Reviewing Scan Settings ..................................................................................7-1

Checking Toolbar Parameters ....................................................................7-2

Scan Type................................................................................................7-3

Scan Mode ..............................................................................................7-3

Line Screen ............................................................................................7-4

Sampling ................................................................................................7-4

Using the Resolution Lock Tool ............................................................7-4

File Size ..................................................................................................7-4

Width and Height ..................................................................................7-4

Scale........................................................................................................7-5

Naming Final Scans ....................................................................................7-5

Performing Final Scans ....................................................................................7-6

Scanning Images Individually....................................................................7-6

Batch Scanning All Images ........................................................................7-6

Pausing or Stopping the Scanning Process................................................7-6

Chapter 8: Tips and Tricks

Tips and Tricks ..................................................................................................8-1

Preface

Preface xi

Introduction

PowerColor is a powerful scanning software package for the UMAX Technologies,

Inc. scanner. With its many flexible features, PowerColor enables you to perform

complex color corrections and to make professional RGB or CMYK color separa-

tions from your scanned images quickly and easily.

Because it manipulates 16-bits per channel color data directly on the host com-

puter, PowerColor gives you the opportunity to preview changes during the initial

scanning process without additional prescanning. PowerColor also provides

instant CMYK feedback on your image transformations, so you can see the results

of your changes immediately.

For performing CMYK separations, PowerColor offers the ease and automation of

ICC profiles with our ColorSync Separator, as well as high level control with the

PowerColor Conventional Separator.

PowerColor and ColorSync (Macintosh)

The Macintosh version of PowerColor is fully ICC compatible with the use of 16-

bits per channel input, output, and display profiles. Output profiles can be either

RGB or CMYK, allowing for flexible color matching for a wide variety of output

devices.

xii PowerColor User Guide

PowerColor includes the following features:

•Multiple, independent scan regions

•Color, range, and gradation control for individual scan regions

•Image manipulation tools, including rotation, cropping, and unsharp

masking

•Flexibility in setting lpi, dpi, size, and scale for individual scan regions

•Scanning to commonly used file formats

•Use of standard ColorSync ICC profiles (Macintosh only)

PowerColor Press

PowerColor Press is a high-end CMYK separator based on a density-to-dot color

engine. This software is intended for use by those who understand the concepts

behind color separation and reproduction as they relate to offset printing.

PowerColor Press offers sophisticated, advanced features for creating high-end

color separations, including:

•Selective color correction

•Automatic adjustments for wanted and unwanted colors

•Two operation modes for general production and expert work

•Input/output three-color and four-color density range gradation control

•Cast correction with diffused highlight and shadow settings

•UCR/GCR gradation control

•User definable dot gain

•User definable gray balance

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