User manual NIKON COLOR MANAGEMENT PREFERENCES

[. . . ] Note that images can only be saved in CMYK if Nikon CMS is on (Nikon CMS is on by default). Preferences-- Nikon Color Management 78 How Nikon CMS Works When image data are passed from an input device, such as a scanner, to an output device, such as a monitor or printer, color management ensures that the image displayed on the output device "looks the same" as the original. To accomplish this task, the color management system must have information about the color characteristics of both the input and output devices, as well as the color space used for editing. The files containing this information are called "ICC profiles. " Nikon Scan uses the following three types of profile: Input Profiles Input profiles provide information on the input device, i. e. , the Nikon scanner. [. . . ] When Use application gamma is selected, this value is applied to the main scan data before they are passed to the host application. First, the interface between the application and Nikon Scan must allow the gamma value to be passed to the Nikon Scan plug-in. The TWAIN interface used under Windows does not, however, allow the gamma value to be passed to the TWAIN source (i. e. , to Nikon Scan). Consequently, in the Windows version of Nikon Scan a default value of 2. 2 is used for main scan gamma whenever Use application gamma is selected. If Use application gamma is selected with a Macintosh application that does not support this feature, Macintosh system gamma (1. 8) will be used. Use custom gamma When this option is selected, a value for main scan gamma can be entered in the text box. Preferences-- Nikon Color Management TOP 83 Color Management The profiles used by the Nikon Color Management System Use Nikon Color Management System are specified in the "Color Management" category. Changes to this setting only take effect after Nikon Scan has been quit and restarted. . . . images are processed to ensure consistent color repro duction, as described in "How Nikon CMS Works" ( 79). Because color management profiles typically contain their own settings for gamma, the controls in the Gamma tab are dimmed and inactive. . . . monitor and color-space profiles are not used, and the controls in the Color Management tab are dimmed and inactive. The only tool available for ensuring that colors from the scanner will be displayed accurately on the monitor is the "Gamma" category ( 82). The only adjustments made to the image before it is passed to the host application are gamma adjustment and changes to curves and color balance made in the scan window. Preferences-- Nikon Color Management TOP 84 The "Monitor" Tab The "Monitor" tab specifies the profile that will be used when images are displayed on your monitor, either in the scan window preview area or a Nikon Scan image window. Monitor profiles contain information about the color and gamma characteristics of the monitor, allowing images to be adjusted for more accurate color reproduction. Use factory default monitor profile (default) Nikon Scan is supplied with default monitor profiles for use when no other profile is available (see below). To use the default profile for your platform, select Use factory default monitor profile. Default Windows Monitor Profile (Gamma 2. 2) The default Windows monitor profile ("NkMonitor_Win. icm") is identical to the sRGB profile. Default Macintosh Monitor Profile (Gamma 1. 8) The default Macintosh monitor profile ("NkMonitor_ Mac. icm") is identical to the profile used for Apple 17 monitors with a D50 white point. Use custom monitor profile Use this option to select a profile supplied by the company that manufactured the monitor. Clicking this button displays a standard open-file dialog; navigate to the disk and folder containing the manufacturer's profile. The path to the selected profile will appear in the text box below the Use custom CMYK profile radio button. CMYK Images can not be scanned in CMYK. If CMYK data are required, convert images to CMYK before saving them to disk. Note that images can only be saved in CMYK if Nikon CMS is on (Nikon CMS is on by default). Preferences-- Nikon Color Management TOP 87 NTSC (1953) This is the color space for video defined by the National Windows Profiles (Gamma 2. 2) Television Standards Committee (NTSC) in 1953 and used in sRGB early color televisions. [. . . ] The white point for each profile is shown by the symbol in the center of the triangle. y 1 0. 9 0. 8 0. 7 0. 6 0. 5 0. 4 0. 3 0. 2 0. 1 0 0 0. 1 0. 2 0. 3 0. 4 0. 5 0. 6 0. 7 0. 8 0. 9 1 Apple RGB Color Match RGB sRGB NTSC (1953) Bruce RGB Adobe RGB (1988) CIE RGB Wide Gamut RGB Human x Preferences-- Nikon Color Management TOP 91 The following table shows the gamma values for the profiles included with Nikon CMS, together with the chromaticity values for the white point and for red, green, and blue. White Point Profile sRGB NTSC (1953) Bruce RGB Adobe RGB (1988) CIE RGB Wide Gamut RGB Apple RGB ColorMatch RGB Apple RGB (Compensated) Default Windows Monitor Default Macintosh Monitor Name x 6500K (D 65 ) Std Illuminant C 6500K (D 65 ) 6500K (D 65 ) Std Illuminant E 5000K (D 50 ) 6500K (D 65 ) 5000K (D 50 ) 6500K (D 65 ) 6500K (D 65 ) 5000K (D 50 ) y x y x y x y x y x y x y x y x y x y x y Value 0. 3127159 0. 3290015 0. 3101 0. 3162 0. 3127159 0. 3290015 0. 3127159 0. 3290015 0. 3333333 0. 3333333 0. 3457029 0. 3585386 0. 3127159 0. 3290015 0. 3457029 0. 3585386 0. 3127159 0. 3290015 0. 3127159 0. 3290015 0. 34570291 0. 3585386 1. 8 Trinitron 2. 2 HDTV (CCIR 709) Gamma Value 2. 2 2. 2 2. 2 2. 2 2. 2 2. 2 1. 8 1. 8 1. 8 Chromaticity (x, y) Name HDTV (CCIR 709) NTSC (1953) Bruce RGB Adobe RGB (1988) CIE RGB 700/525/450nm Trinitron P22-EBU Custom R x 0. 64 y 0. 33 x 0. 67 y 0. 33 x 0. 64 y 0. 33 x 0. 64 y 0. 33 x 0. 735 y 0. 265 G x 0. 3 y 0. 6 x 0. 21 y 0. 71 x 0. 28 y 0. 65 x 0. 21 y 0. 71 x 0. 274 y 0. 717 B x 0. 15 y 0. 06 x 0. 14 y 0. 08 x 0. 15 y 0. 06 x 0. 15 y 0. 06 x 0. 167 y 0. 009 x 0. 7347 x 0. 1152 x 0. 1566 y 0. 2653 y 0. 8264 y 0. 0177 x 0. 625 y 0. 34 x 0. 63 y 0. 34 x 0. 65 y 0. 341 x 0. 64 y 0. 33 x 0. 625 y 0. 34 x 0. 28 y 0. 595 x 0. 295 y 0. 605 x 0. 265 y 0. 717 x 0. 3 y 0. 6 x 0. 28 y 0. 595 TOP x 0. 155 y 0. 07 x 0. 155 y 0. 077 x 0. 14 y 0. 0454 x 0. 15 y 0. 06 x 0. 155 y 0. 07 92 Preferences-- Nikon Color Management Keeping Colors True in Other Applications When an image is scanned in the Nikon Scan TWAIN source or acquire plug-in and opened in another application, or when an image saved using Nikon Scan is opened in another application, the image will be processed according to the color-space and monitor profiles selected in the application before being displayed on the monitor. If the profiles used in the application do not match those used in Nikon Scan, colors may not be the same as those in the original image. RGB Color Model Choose a monitor profile that matches that chosen in the "Monitor" tab and a color-space profile that matches that selected in the "RGB" tab (the Photoshop profiles corresponding to those used in Nikon Scan are listed on the preceding pages). If no matching RGB profile exists, you can use the Nikon Scan profiles in the path Program Files\Common Files\Nikon\Profiles (Windows) or System Folder : Preferences : Nikon MAID : Profiles (Macintosh). [. . . ]