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Advanced Scanning

BEFORE YOU BEGIN - SCANNING IN ADVANCED MODE - ADVANCED MODE TOOLBAR
ADVANCED MODE CONTROL TABS - PERFORMING THE SCAN


It is highly recommended that you walk through the "Basic Scanning" tutorial before proceeding.

BEFORE YOU BEGIN: CREATING YOUR OWN FOLDER

Before we do anything, make sure you have a folder set up for yourself. This is where you will save all your work files. If you haven't set one up before, or not on the station you are using, let's set up your folder.

  1. From the Windows desktop, double click My Computer.
  2. Double-click on Media (D:). This is the drive on which you will always save your work.
  3. From the menu, select File > New > Folder.
  4. A new folder will appear prompting you to name it. Type in your name.
  5. Your new folder will then appear with the new name you've given it.

That's it. You've got your own folder on the Media drive.

SCANNING IN ADVANCED MODE

Advanced mode is a bit trickier, but gives users greater control over the outcome of their images.

To begin scanning, enter Photoshop and select File > Import > CanoScan LiDE 20. The ScanGear window appears. If its menu does not look like this, there will be a button on the bottom right of the screen that says Advanced Mode. When you click it, it will bring you to this screen.

ADVANCED MODE TOOLBAR

Before we get started, let's look at the controls available to us in advanced mode. First, notice the ten small buttons on the toolbar:

CROP BUTTON. Click this button to manually select the portion of the image for the final scan. Drag the mouse cursor when it is shaped like a "+" plus sign to select the cropping frame.

MOVE BUTTON. Use this button to move the preview image around the Preview Area. It is particularly helpful to navigate around the preview image when the Zoom button has been activated.

ZOOM BUTTON. Click this button and then click on a point in the image to center the expanded view on that point. Right-click (Windows version) to zoom the image back out again.

AUTO CROP BUTTON. Clicking this button automatically selects only the area of the image shown within the Preview Area and displays the cropping frame around it.

INVERT BUTTON. This button inverts the colors in the preview image.

MIRROR BUTTON. This button flips the preview image from left to right.

ROTATE BUTTONS. These buttons rotate the image clockwise or counter-clockwise each time they are clicked.

RULER BUTTON. This button can be used to measure portions of images in the Preview Area. Clicking it displays rulers (fixed) at the top and left of the Preview Area.

INFORMATION BUTTON. This button displays information about the scanned image.

ADVANCED MODE CONTROL TABS

In advanced mode there are two tabs of options -- main and settings.

You will control most of your custom settings through the main tab. The main tab consists of the following options:

SELECT SOURCE. No choice is needed. The only option (platen) is already selected.

COLOR MODE. This allows you to set the color type and depth of your scan. Black and White is useful if you intend to output your images directly to a non-color laser printer. Grayscale has a similar use to black and white, but offers more detail by using 254 shades of gray between black and white. Color (Photo) is the best option for color photographs, while Color (Documents) is better for scanning color documents that contain text or charts in addition to photographs. Text Enhanced scans plain text documents more sharply, and is useful primarily for rendering images that will be processed by Optical Character Recognition (OCR) programs.

OUTPUT RESOLUTION. This determines the final scanned resolution of the image in dots per inch (DPI). The higher the DPI, the finer the image. ScanGear gives you the following options for resolution: 75 dpi, 100 dpi, 150 dpi, 200 dpi, 300 dpi, 400 dpi, 600 dpi, and 1200 dpi. In addition, a value ranging from 25 dpi to 2400 dpi can be directly input in 1 dpi increments. The values of 4800 dpi, 7200 dpi and 9600 dpi can also be directly input. Rule of thumb: 75 dpi for web graphics, 300 dpi for digital photo prints, 1200 dpi for large-scale printing. If you are scanning for a specific purpose such as making digital prints or posters, consult the vendor for resolution recommendations.

PAPER SIZE. Select the size of the item being scanned from the following options: Business Card, L Portrait, L Landscape, Postcard, LL Portrait, LL Landscape, B5, A4, Letter, Full Platen. The size of the Preview Area adjusts to the proportions of the selected paper size. You can also fine tune your size after a preview scan.

MULTI-CROP. This option is useful if you want to scan multiple photographs at the same time. If the Apply button is clicked (after a preview scan), the scanner automatically detects multiple items placed on the platen and reproduces the corresponding number of image files. If an item is slightly askew (less than a 10 degree tilt), then the image is automatically straightened.

SELECTION. Values for a selection area can be directly input to set the scan area. The button between width and height is the "lock aspect ratio" button, which keeps the selection in proportion when the selection size is adjusted.

PRINT SIZE. This section sets the size at which the selected scan area is output. Scale values can be input in increments of 1% between the range of 25% to 400%.

Typically you may never need to use the settings tab. It contains settings that only affect a limited range of scanning needs, including scanning images from newspapers or magazines. The Settings tab consists of the following options:

FILTER PROCESSING. Click on Descreen function on when you are scanning photos or pictures from print publications, such as books or magazines. Click on Unsharp Mask to sharpen outlines in an image. This function is effective when an image's focus is fuzzy. It enhances the crispness of the overall image.

REDUCE DUST AND SCRATCHES. Dust and scratches on photo prints can sometimes cause white "noise" patterns to appear on images. To scan while eliminating this noise to the greatest possible extent, select the Soft, Normal or Hard option.

COLOR SETTINGS. The Recommended option displays the item's colors with fresh colors on the screen. This option is recommended for most scanning situations. The Color Matching option automatically adjusts the color characteristics of the scanner, display and color printer to lighten the task of matching the printer output to that of the display.

CALIBRATION. Calibrate the scanner if the colors in the preview image vary significantly from those in the original item or colors appear in areas that should be white.

PERFORMING THE SCAN

Once you have ScanGear set the way you want it, you can begin your scanning.

  1. Unless you have set the Paper Size option in the Main tab to match your document's size, chances are you will need to do a preview scan first. (If you have set this option, skip to step #3)Clicking on the Preview button will acquire a scan of the entire scanner surface.
  2. Use the Crop tool to adjust the selection box to fit your document.
  3. Click the Scan button. The scanner will acquire your image and send it to Photoshop.
  4. Click the X button in the top right corner of the ScanGear window to close it.
  5. Save your image (see Scanning Basics).