User manual KONICA MINOLTA DIMAGE SCAN DUAL III AF-2840 Instruction Manual

[. . . ] E 9222-2889-11 AV-A209 INSTRUCTION MANUAL COLOR EXAMPLES Tone-curve corrections By selecting individual color channels on the tone curve, adjustments to the overall color of an image can be made. In this example, the image is too yellow. By moving the blue curve up, the image looks more neutral. For more on tone curve corrections, see page 71. Selective-color palette In the original image, the colors were muted making the whole scene flat. [. . . ] The effect of the Auto Dust Brush cannot be evaluated in the prescan image. This function is activated with the Auto Dust Brush button in the main window (p. 39). Index-scan-priority radio button: this option allows the selection of high-speed index scans or a quality index scans with prescans. Simply click the appropriate radio button. The speed setting allows faster index scans. Only index thumbnails are created with this setting. The scanner will make separate scans when prescans are required. The autofocus function is disabled during the index scan. The quality setting makes an index thumbnail and prescan of each image. Double clicking on the index thumbnail immediately displays the larger prescan image. Prescan images are easier to use to make critical decisions over image quality. Image corrections can only be applied to prescans. The setting increases index scanning time. Color-matching: this option turns color matching on. For more information, see the color matching section on page 60. Rotate-all-frames-180-degrees check box: this option rotates all APS index frames 180 degrees in the index scan window. Cancel button: to cancel any settings made and close the window. OK button: to apply the preference settings and close the window. 45 DIMAGE SCAN DUAL III UTILITY ­ ADVANCED SCANNING Exposure-control tab The exposure control is not an image-processing tool. No gamma or contrast changes can be made. The exposure-control tab allows the scanner's exposure system to be customized to specific films, lighting, or a personal exposure index based on the film, processing, lens, and shutter combination. This can also be used to compensate for badly exposed film. Simply click the exposure-control tab to display the selected image. If a prescan has not been made, the scanner will make one automatically. Load setting button Save setting button Reset button Apply-all button Fit-to-window button (p. [. . . ] A subtractive color system recreates color with pigments and dyes to absorb unwanted color. If all three colors are mixed, black is produced. Film-based photography is a subtractive process. Printing technology is also a subtractive process, but, unlike photographic systems, it requires a black channel (K). [. . . ]