Epson Expression 1680 User Manual Page 49
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- Table of contents
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Understanding EPSON TWAIN Pro Features 2-29
Note:
❏ The luminosity value is calculated by the following formula:
0.2R+0.6G+0.2B.
❏ For more information on the Pixel Depth setting, see “Image Type
button” on page 2-6.
Specifying the number of pixels to be sampled
You can choose to sample one pixel at a time, 3
×
3 pixels at a time,
or 5
×
5 pixels at a time. To change the number of pixels being
sampled, press the Ctrl and E keys on your keyboard. The square
in the center of the close-up changes size to indicate the amount
of pixels being sampled.
Note:
❏ The values shown for a group of pixels are an average of each pixel’s
values.
❏ In the Configuration dialog box, you can specify the default number
of pixels to be sampled when the Densitometer opens. See
“Densitometer menu” on page 2-23 for instructions.
Using the Preview Buttons
The Preview buttons let you zoom in on selected
portions of the previewed image.
- Reference Guide 1
- Contents 3
- 4 Contents 4
- Chapter 4 Options 5
- 6 Contents 6
- Introduction 7
- Finding More Information 8
- Optimizing Scanning 9
- Making the Highlight setting 10
- Making the Shadow setting 11
- 1-4 Optimizing Scanning 12
- Making the Gamma setting 13
- Applying a preset tone curve 13
- 1-6 Optimizing Scanning 14
- Adjusting Color 15
- Making the Saturation setting 16
- Making tone curve settings 17
- Output values 18
- Optimizing Scanning 1-11 19
- If you still have problems 20
- Features 21
- Selecting a Document Source 23
- Selecting an Image Type 24
- Image Type button 26
- Pixel Depth 27
- Scanning Mode 27
- De-screening 27
- Auto Exposure Option 27
- B/W Options 28
- Selecting a Destination 29
- Destination list 30
- Destination button 31
- Destination Name 32
- Resolution 32
- Unsharp Mask 32
- Setting the Resolution 33
- Storage size indicator 34
- Lock button 35
- Using the Settings Dialog Box 36
- Making Configuration Settings 37
- Fast Preview 38
- Eyedropper Sampling Area 38
- Color menu 39
- Display Gamma 40
- Continuous Auto Exposure 40
- Source (Scanner) 41
- No Color Correction 42
- Densitometer menu 43
- Other menu 44
- Using the Scan Button 45
- Using the Preview Button 45
- Using the Preview Window 46
- Using the Densitometer 48
- Using the Preview Buttons 49
- Using Marquees 50
- Making and modifying marquees 51
- Resizing marquees 52
- Using the Marquee tools 53
- Delete button 53
- Duplicate button 54
- Auto Locate button 54
- Marquee number indicator 55
- All button 55
- Using the Adjust Buttons 56
- Auto Exposure 57
- Image Controls 58
- Exposure 59
- Highlight 59
- Tone Correction 60
- Tone Curve editor 61
- Output options 61
- Channels options 61
- Color Adjustment 62
- Gray Balance Intensity 63
- Saturation 63
- Setting Up the Start Button 65
- 2000 Settings 66
- Making PageManager Settings 68
- Chapter 4 70
- Using the Transparency Unit 70
- Removing the shipping screw 71
- Options 4-3 72
- 4-4 Options 73
- Options 4-5 74
- 35-mm film strips 75
- Options 4-7 76
- Mounted slides 77
- Options 4-9 78
- 120/220 film 79
- Options 4-11 80
- 4 x 5 inch film 81
- Options 4-13 82
- 4-14 Options 83
- Non-standard film sizes 84
- 4-16 Options 85
- Options 4-17 86
- 4-18 Options 87
- Options 4-19 88
- 4-20 Options 89
- Options 4-21 90
- Document Feeder 91
- Options 4-23 92
- Loading documents manually 93
- Options 4-25 94
- Document specifications 95
- Document conditions 96
- Other precautions 96
- 4-28 Options 97
- System requirements 98
- 4-30 Options 99
- Connecting the scanner 100
- 4-32 Options 101
- Chapter 5 102
- Maintenance 102
- Problems and Solutions 105
- Fatal error 106
- Option error 106
- Command error 106
- Interface error 106
- Scanner operation problems 107
- Quality problems 115
- Monitor colors 118
- Printed colors 119
- Software setup problems 120
- Sizing Up Your System 125
- Video cards 126
- Monitors 126
- File compression software 126
- Contacting Customer Support 127
- Technical Specifications 128
- A-2 Technical Specifications 129
- Electrical 130
- Environmental 130
- Standards and Approvals 131
- SCSI Interface 132
- USB Interface 133
- Option Interface Connector 134
- Initialization Methods 134
- Transparency Unit 135
- Automatic Document Feeder 136
- IEEE 1394 Scanner I/F Card 137
- Technical Specifications A-11 138
- Glossary 139
- 2 Glossary 140
- Glossary 3 141
- 4 Glossary 142
- Numerics 143
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