User manual NIKON COLOR MANAGEMENT PREFERENCES

[. . . ] Nikon Color Management The Nikon Color Management System, or Nikon CMS, ensures that image data from Nikon scanners are reproduced consistently and accurately on monitors or printers. With this powerful tool, colors can be manipulated in a calibrated RGB color model before the data are passed to the host application. Profiles detailing the color characteristics of the chosen color model and the output device (monitor or printer) ensure that colors will be reproduced accurately in almost any operating environment. Keeping Colors True Nikon CMS involves two categories of preferences, one ("Gamma") for use when Nikon CMS is off and the other ("Color Management") for use when Nikon CMS is on. [. . . ] Three options are available: Use preview gamma The gamma value chosen for preview gamma is applied before the data are passed to the host application. Use this setting when the host application does not support inde pendent gamma settings and you want the final image to be modified for display on your monitor. Use application gamma In some environments, a value for gamma can be chosen in the host application and passed to the Nikon Scan plugin. When Use application gamma is selected, this value is applied to the main scan data before they are passed to the host application. Two conditions must be fulfilled if this option is to be effective. 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. Second, the application must support gamma transfer. 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. This option turns the Nikon Color Management System on and off. 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. [. . . ] It is not provided ColorMatch RGB in the standard install of Photoshop 5. 0, but can be selected The ColorMatch profile is native to Radius PressView monas the RGB color-space profile for Photoshop by importing itors. It has a wider gamut than Apple RGB, with a particuthe profile "NKApple_CPS. icm". larly wide area devoted to the reproduction of blues. The corresponding RGB setting in Photoshop 5. 0 is "Color Match RGB. " Macintosh Profiles (Gamma 1. 8) Apple RGB This profile is used in desk-top publishing applications and in Adobe Photoshop versions 4. 0 or earlier, and is the typical RGB profile for Macintosh monitors. [. . . ]