Selective-color palette, About RGB and CMY | Konica Minolta IV

Selective-color palette

Selective-color correction is an advanced technique to refine the colors in the image. A cyan, magenta, yellow, and black channel can be used to adjust the six separate color groups in the image: red, green, blue, cyan, magenta, and yellow. The black- level slider controls the brightness of the selected color group.This type of correction is effective in changing a specific color without influencing any of the other colors in the image. For example, if the sky looks purplish instead of blue, magenta can be reduced in the blue color group. See page 2 for a selective-color example.

Click the selective-color button to open the palette.

Select the color group to be corrected from the drop-down menu at the top of the window.

Drag a slider or enter a value in a text box to adjust the selected color group. More than one slider can be used to adjust the selected color. Changes will be reflected in the display image. Click the reset button to cancel any changes.

About RGB and CMY

The RGB color model is an additive process that uses the primary colors of light: red, green, and blue. An additive color system mixes the three colors to recreate the entire spectrum of light. If all three colors are mixed, white light is produced. Television sets and computer monitors use RGB to create images.

The CMY color model is a subtractive process that uses the secondary colors: cyan, magenta, and yellow. 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). Because of the imperfections of printing inks, cyan, magenta, and yellow cannot produce a true black when mixed, printers use what is called a four-color process (CMYK) to reproduce images.

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Konica Minolta IV instruction manual Selective-color palette, About RGB and CMY

Contents

Page Selective-color palette Tone-curve corrections Before YOU Begin For Proper and Safe USE DiMAGE Scan Dual Table of Contents Page Table of Contents Names of Parts InstallationBefore installing the DiMAGE Scan Utility DiMAGE Scan system requirements Adobe Photoshop Elements Additional memory requirements Windows Page Macintosh Page Connecting the USB cable Scanner SetupBefore connecting the scanner to a computer Turning on the scanner Connecting the AC adapterDisconnecting the scanner Loading 35mm film strips Where is the emulsion?Loading the Film Holders Handling film Loading a film holder into the scanner Loading mounted slides Using the APS Adapter AD-10 sold separately APS Ejecting a film holder Dimage Scan Launcher Launching the Easy Scan Utility Easy Scan Utility Scanner Notes Macintosh Using the Easy Scan Utility On next Easy Scan Utility Page Scanning basics Basic ScanningLaunching the DiMAGE Scan Utility Main window and index scan tab Scanner setup Selecting index thumbnails Making an index scan Fit-to-window button Flip and rotate images Making a prescan Main window and prescan tab CHP button APS film Grab toolMagnifying tool Auto cropping Making the final scan Tiff BMP Pict Main window and image-correction tab Basic Image Processing Pixel Polish Auto Dust Brush retouching level Auto Dust Brush Variation palette Brightness, contrast, and color balance palette Green An introduction to color Undoing and redoing image corrections Comparing pre and post-correction images Quitting the DiMAGE Scan Utility Advanced Scanning Setting scanner preferencesPage Exposure-control tab Loading exposure settings Saving exposure settings Reverse frame order More index scan functions Loading an index file Saving the index thumbnailsSaving an index file Point AF Autofocus More prescan functions Manual focus Manual cropping AE area selection Autoexposure Inputting scan settings manually About resolution and output size Scan setting examples Deleting a Job Saving scan settings as a Job More image-processing tools Advanced Image Processing Prescan display Sample display area Digital Grain Dissolver Tone curve and histogram palette Using tone curves Drawing tone curves by freehand About the tone curve Short guide to tone curve corrections Increasing image contrast Histogram corrections Tone curve / histogram auto setting Konica Minolta History Short guide to histogram correctionsPage White, gray, and black point corrections Tracking image corrections Snapshot button Setting the white and black-point values Hue, saturation, and lightness palette About RGB and CMY With mask Original image Unsharp mask Loading image-correction Jobs Saving image corrections Custom Wizard Page Batch Scan Utility Page Advanced Batch Scan setup Page Color Matching Setting the output color space Ntsc CIE RGB Output color spaces Scanner color profiles Setting the monitor ICC profile Output Color Space Monitor RGB Color matching recommendations Auto Dust Brush PLUG-IN Before installing the plug-inInstallation Windows Page Installation Macintosh Using the Auto Dust Brush plug-in Auto Dust Brush PLUG-IN Glossary of common terms Appendix Uninstalling the DiMAGE Scan Software Windows Installed files and folders Job file list 35mm Troubleshooting Checking software installation Windows Technical Specifications Record keeping Warranty and product registrationTechnical support Image processing Image Data Sheet Hue corrections