Konica Minolta AF-2840 instruction manual White, gray, and black point corrections

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DIMAGE SCAN DUAL III UTILITY – IMAGE PROCESSING

White, gray, and black point corrections

On the tone curve / histogram palette, corrections can be made by specifying a white, black, and gray point within the image. Locating an appropriate neutral area within the image is critical to cor- rectly calibrate the software. When the dropper tool is selected, the RGB display is active and can be used to evaluate the image area. All changes are immediately reflected in the display image.

Click the white-point button; the mouse point- er changes to the white dropper tool.

With the dropper tool, click on the brightest neutral area of the image to define it as the white point. The values of the image will be adjusted based on the selected point. The default level for the white point is 255 for each RGB channel.

Click the black-point button.

With the dropper tool, click on the darkest neutral area of the image to define it as the black point. The values of the image will be adjusted based on the selected point. The default level for the black point is 0 for each RGB channel.

Click the gray-point button. The grey point controls the color of the image.

With the dropper tool, click a neutral area of the image to be defined as the gray point. The area used to calibrate the gray point must be neutral. The brightness level of the area is not important, but if the area has a definite color, the image will not be color balanced correctly.

Click and hold the apply button to show the change on the histogram. Click the reset button to cancel all corrections.

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Contents AV-A209 Tone-curve corrections Selective-color paletteColor Examples Before YOU Begin Table of Contents Page Table of Contents Page For Proper and Safe USE Page Package contents System RequirementsIBM PC/AT compatible computers PolishInstallation Before installing the utility softwareInstalling the utility software Windows Page Installing the utility software Macintosh Page Windows Installing Adobe Photoshop ElementsLaunching the scanner utility from Photoshop Elements MacintoshNames of parts Before scanner setup Connecting the USB cableTurning on the scanner Connecting the AC adapterDisconnecting the scanner Turning off the scannerLoading the film Where is the emulsion?Film formats Handling filmLoading mounted slides Using the FH-U1 and SH-U1 film holders Using the APS Adapter AD-10 sold separatelyLoading a film holder into the scanner Ejecting a film holder Launching the Easy Scan Utility Easy Scan UtilityUsing the Easy Scan Utility Canceling an index scan, prescan, or final scan Macintosh Page Pixel Polish button Auto Dust Brush button File types BMPAdvanced scanning p Dimage Scan Dual III UtilityBasic scanning p Image processing pSelecting the film format and type Launching the DiMAGE Scan Dual III UtilityLaunching the utility from an image-processing application Dimage Scan Dual III Utility Basic ScanningIndex scan Main window and index scan tabCanceling the index scan Making an index scanSelecting index thumbnails Flip and rotate images Fit-to-window button Prescan Main window and prescan tabMagnifying tool Making a prescanGrab tool Auto croppingCHP button APS film Manual croppingPrescanning the cropped area Auto Dust Brush Removing the effect of dust Pixel Polish Correcting images automatically Main window and Pixel Polish tabPage Making the final scan using Jobs Quitting the DiMAGE Scan Dual III Utility Setting scanner preferences Dimage Scan Dual III Utility Advanced ScanningPage Exposure-control tab Saving exposure settings Loading exposure settingsMore index scan functions Reverse frame orderSaving the index images Saving an index fileLoading an index file Autoexposure control More prescan functions AE area selection AE lockFocusing the scanner More prescan functions Point AF AutofocusManual focus Inputting scan settings manually Scan setting windowAbout resolution and output size Scan setting examples Saving scan settings as a Job Deleting a JobCustom Wizard Page Setting the output color space Color matchingPage Setting the monitor ICC profile Scanner color profilesColor matching recommendations Output Color Space Monitor RGBImage processing tools Main window and image-correction tabDimage Scan Dual III Utility Image Processing Guide to image processing tool Tools and functions EffectsImage processing glossary Undoing and redoing image corrections Tracking image corrections Snapshot buttonComparing pre and post correction images Saving image correctionsLoading image-correction Jobs Complementary colorsVariation palette Brightness, contrast, and color balance palette Tone curve and histogram corrections Using tone curves Tone curve and histogram paletteDrawing tone curves by freehand Short guide to tone curve corrections Bringing out detail in the shadowsIncreasing image contrast Correcting colorHistogram corrections Tone curve / histogram auto setting White, gray, and black point corrections Setting the white and black-point values Selective-color paletteUnsharp mask Hue, saturation, and lightness palette 35mm film JOB File ListsAPS film Installed Files and Folders Mac OS 8.6 Mac OSTroubleshooting and Technical Support SolutionChecking Scanner Installation Windows Pixel Polish and Mac OSWarranty and product registration Technical supportTechnical Specifications RAMPrimary RGB and secondary CMY colors Complementary colorsAN Introduction to Color Complementary colors p HSB color model pHue corrections Universal Copyright Convention AV-A209