User manual NIKON SCAN WINDOWS

[. . . ] Before You Begin 2. 1 System Requirements 2. 2 Software Installation 3. Basic Operations 3. 1 Launching and Quitting 3. 2 Main Dialog Box 3. 3 Basic Scanning TWAIN Driver Nikon Scan Windows 4. Scanning Conditions 4. 1 Choosing the Scanner 4. 2 Setting the Gamma Value 4. 3 Positioning Media 4. 4 Ejecting Film (film scanners only) 4. 5 Choosing the Media Type 4. 6 Crop/Preview Area Buttons and Menu 4. 7 Cropping 4. 8 Crop Size Controls 4. 9 Autofocus (film scanners only) 4. 10 Adjust Focus (film scanners only) 4. 11 Autoexposure 5. Image Compensation 5. 1 Brightness / Threshold 5. 2 Contrast 5. 3 Color Balance 5. 4 Level Display User's Manual -1- 6. [. . . ] See Appendix B. - 31 - 4. 11 Autoexposure The Autoexposure function can be used to perform a prescan after a preview operation has been completed. If you click the Preview button when the Prescan check box is turned off or while holding down the Ctrl key, the prescan operation will not be carried out. In this case, you can perform a prescan operation after preview by selecting Autoexposure from the Special Capabilities submenu. Note: The pop-up menu shown above is for the LS-1000. The corresponding pop-up menus for the LS-4500AF and for the AX-110 and AX-210 are different. Please see the appendix appropriate to the scanner you are using. The prescanning operation begins immediately on your selecting the Autoexposure function from the Special Capabilities submenu. - 32 - 5. Image Compensation This chapter explains how to adjust continuous tone brightness, line art threshold, contrast, and color balance. All these settings are made using buttons or text edit boxes. The results of compensation can be checked with a preview scan. The appearance of the Main dialog box varies with the Media Type, as shown below. 5. 1 Brightness / Threshold This control is used to set the brightness for a Color or Grayscale image, or the threshold value for a B&W Line Art image. When this button is clicked, a slider bar pops up. The value is set by dragging the slider to the left or right while holding down the mouse button. The same result can be achieved by entering a value directly in the box to the right of the button. Color Grayscale B&W Line Art When the slider is dragged in the plus direction, the images will be brighter and the black point will begin to float above maximum black. When dragged in the minus direction, the images will become darker and dimmer. For a B&W Line Art image, the set value is the threshold value. Brightness adjustment range: Threshold adjustment range: -100 to 100 0 to 255 Note: When a monitor with 32K colors or more is used, the R, G, and B buttons are shown in their respective colors. - 33 - 5. 2 Contrast This control is used to set the contrast for Color or Grayscale images. A contrast setting is not used for B&W Line Art images. 5. 3 Color Balance The color balance is adjusted using three controls for Red, Green, and Blue. These three controls only appear when 'Color' has been set for the Media Type. When this button is clicked, a slider bar pops up. The value is set by dragging the slider to the left or right while holding down the mouse button. The same result can be achieved by entering a value directly in the box to the right of the button. When one of these buttons is clicked and held down, a slider bar pops up. The value is set by dragging the slider to the left or right while holding down the mouse button. The same result can be achieved by entering a value directly in the box to the right of the button. When the slider is dragged in the plus direction, the black point and white point input values will be restricted, thus steepening the tone curve and producing punchier images with less gradation subtlety. When dragged in the minus direction, the black output values will be raised and the white point output values lowered, thus flattening the tone curve and producing flatter images with more gradation subtlety. [. . . ] Highest Speed: Normal: Scan with emphasis on speed Normal scan Highest Quality: Preview with emphasis on quality Highest Quality: Scan with emphasis on quality Under normal circumstances the best choice is Highest Quality. - 53 - B. 4 Sharpening It is often necessary to sharpen images prior to reproduction since there are usually losses in definition when going to press. To enhance edge contrast, choose Sharpening. . . from the Special Capabilities menu. The Sharpening window appears. Choose one of the following from the Sharpening window. · · · · · Sharpen More Sharpen None Blur Blur More - 54 - B. 5 Make Shading After replacing the lamp, you must perform lamp calibration using the Make Shading function before you can operate the scanner (to replace the lamp, follow the directions given in the LS-4500AF hardware manual). [. . . ]