User manual MINOLTA MAXXUM 5000

[. . . ] This instruction manual does not provide instruction in the basic operation of the personal computers, or the basic operation of Windows or Macintosh operating systems; refer to the manuals supplied with the computer. The appearance of the screens may differ from the examples when using Macintosh or other Windows operating systems. Every precaution has been taken to ensure the accuracy of this material. Konica Minolta is not responsible for any loss or damage caused by the use of this software. [. . . ] Click the undo button to return to the original freehand curve. 2 49 A SHORT GUIDE TO TONE-CURVE CORRECTIONS Highlights Output 50 The tone curve is a graphic representation of the brightness and color levels of the image. The bottom axis is the 256 levels of the original image (input data) from black to white. The vertical axis is the corrected image (output data) with the same scale from top to bottom. Midtones Shadows The bottom left portion of the graph represents the dark colors and shadow areas of the image. Changing the tone curve can affect the brightness, contrast, and color of the image. Input Bring out detail in the shadows This is a simple technique to make a subject hidden in the shadows brighter. Unlike the brightness level control (page 33), this method of correction will not loose details in the highlight areas of the image. With the RGB channel selected, place the smooth-curve cursor on the center of the curve. The adjustment can be very small and still have a significant impact on the image. Moving the tone curve down will make the image darker. ADVANCED IMAGE PROCESSING Increasing contrast The contrast of an image can be changed. The light blue 45° line on the tone-curve graph represents the original contrast of the image. Making the angle of the tone curve greater than 45° will increase the contrast of the image. Making the angle less than 45° will reduce the contrast. With the RGB channel selected, click on the tone curve near the top and bottom to add two nodes. Input shadow slider Input highlight slider Input gamma slider Input shadow text box Input gamma text box Input highlight text box Output shadow slider Output highlight slider Output highlight text box Output shadow text box The color histograms can be displayed with the channel list box or with keyboard shortcuts. While holding the shift key (Windows) or command key (Macintosh), press "1" to display the red channel, "2" to display the green channel, "3" to display the blue channel, or "0" (zero) to display the RGB channel. 56 ADVANCED IMAGE PROCESSING The highlight level, shadow level, and gamma can be set manually. The histogram can be used to maximize the distribution of the pixels in the image. All the levels on the histogram are displayed numerically to the right of the sliders. Dragging the gamma slider to the right will darken the image, and dragging it to the left will brighten it. Similar to the tone-curve correction described on page 50, the gamma slider allows the brightness of the image to be adjusted without loosing image information. As the slider is moved to the left, an apparent increase in contrast can be seen in the displayed image. All pixels to the right of the slider are set to 255 and any image detail they may contain will be lost. This can be an important tool for improving copy images of text on a white background. Uneven illumination, or faded or stained paper can be distracting when copying text or line art. By adjusting the white level, the imperfections of the white background can be eliminated leaving only the darker text visible. [. . . ] This is not necessary for Macintosh OS 9 operating systems. Windows 1. If the standard installation was used, it will be located in C:\Program Files\DiMAGE Viewer. Uninstall the old version of the DiMAGE Viewer using the add/remove programs or add/remove applications (XP) routine in the control panel. While logging on as a user, launch the DiMAGE Viewer once and close it to create the necessary folders. [. . . ]