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Preferences— Nikon Color Management

 

 Keeping Colors True in Other Applications

Keeping Colors True in Other Applications

When an image is scanned in the Nikon Scan TWAIN source or ac quire 
plug-in and opened in another application, or when an image saved 
using Nikon Scan is opened in another application, the image will be 
pro cessed ac cord ing to the col or-space and monitor profi les se lect ed in 
the application before being displayed on the monitor.  If the pro fi les 
used in the ap pli ca tion do not match those used in Nikon Scan, col ors 
may not be the same as those in the original image.

RGB Color Model

Choose a monitor pro fi le  that  match es that cho sen in the “Monitor” 
tab and a color-space pro fi le that match es that se lect ed in the “RGB” 
tab (the Photoshop pro fi les cor re spond ing to those used in Nikon Scan 
are list ed on the preceding pag es).  If no match ing RGB profi le exists, 
you can use the Nikon Scan profi les in the path Pro gram Files\Common 
Files\Nikon\Profi les  (Win dows) or Sys tem Folder : Pref er enc es : Nikon 
MAID : Profi les (Macintosh).  The fi les containing the profi les listed in 
the RGB sheet are given below.

Profi le

File name

sRGB

NKsRGB.icm

Bruce RGB

NKBruce.icm

NTSC (1953)

NKNTSC.icm

Adobe RGB (1998)

NKAdobe.icm

CIE RGB

NKCIE.icm

Wide Gamut RGB

NKWide.icm

Apple RGB

NKApple.icm

Color Match RGB

NKMatch.icm

Apple RGB (compensated)

NKApple_CPS.icm

* Do not use the “Scanner RGB” profi le when scanning images for use 

in a third-party application.

When Nikon Scan is used as an acquire plug-in to the Macintosh version 
of Adobe Photoshop 5 or later (full ver sion), the RGB profi le will auto-
matically be passed to Photoshop when the image is scanned.  Be sure 
that the monitor profi le matches that used in Photoshop by selecting the 
Photoshop monitor profi le in the monitor sheet of the Nikon Scan color 
management tab.

CMYK Color Model

Choose a monitor pro fi le that match es that cho sen in the monitor sheet 
and a color-space pro fi le that match es that se lect ed in the CMYK sheet.  
When Nikon Scan is used as an acquire plug-in to the Macintosh ver-
sion of Adobe Photoshop 5 or later (full ver sion), the CMYK profi le will 
automatically be passed to Photoshop when the image is scanned.

Summary of Contents for Scan 4

Page 1: ... will be mod ified for display on the monitor Because monitor profiles can not be used when Nikon CMS is off this adjustment must be made manually Color Management is used to turn Nikon CMS on and off and select the profiles for use with the monitor and with the CMYK and calibrated RGB color models when Nikon CMS is on Turning Nikon CMS Off Turning Nikon CMS Off In general much better results can ...

Page 2: ...nment This profile can then be used in Nikon Scan For information on creating monitor profiles see the documentation provided with Adobe Photoshop This option is not available in Adobe Photoshop LE 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 a...

Page 3: ...nges that were made using the color enhancement and Unsharp Mask tools in the scan window The data are then transferred to the host appli cation Where possible the color space profile is transferred to the host application together with the image data The TWAIN interface used in Windows however does not allow profiles to be passed to another application with the result that under Windows the profi...

Page 4: ...ed RGB or gray scale Similarly the absence of a monitor profile means that gamma adjustment must be used to correct the image for display on the monitor or for editing in another application These adjustments to gamma are made in the Gamma category of the Preferences dialog The illustration below shows how scanning proceeds when Nikon CMS is off The image shown in the preview window is adjusted fo...

Page 5: ...ere are two exceptions to this rule however The first is when Nikon Scan is used as a stand alone application the second when Use preview gamma is selected as the main scan gamma option In these cases preview gamma is applied to image data passed to the host application Preview gamma defaults to a value of 1 8 on the Macintosh 2 2 on Windows computers To choose a setting suited to the current moni...

Page 6: ...for gamma can be chosen in the host application and passed to the Nikon Scan plug in 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 effec tive First the interface between the application and Nikon Scan must allow the gamma value to be passed to the Nikon Scan ...

Page 7: ...uction 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 When Nikon CMS Is Off monitor and color space profiles are not used and the controls in the Color Management tab are dimmed and in active The only tool available for ensuring that colors from the scanner will be display...

Page 8: ...lect 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 moni tors with a D50 white point Use custom monitor profile Use this option to sele...

Page 9: ...o the output level for mid tones Windows and Macintosh systems process video signals differently and these differences are reflected in the difference in the standard gamma values for these platforms The default system gamma for Macintosh computers is 1 8 the de facto standard for Windows systems 2 2 Nikon CMS includes eight RGB profiles with a Windows gamma of 2 2 sRGB Bruce RGB NTSC 1953 Adobe R...

Page 10: ...to select a profile supplied by the company that manufactured your printer When this option is selected the Choose Custom Profile button will be active Click ing 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 CMYK I...

Page 11: ... the colors in the SWOP CMYK gamut It is not provided in the standard install of Photoshop 5 0 but can be selected as the RGB color space profile for Photoshop by importing the profile NkBruce icm NTSC 1953 This is the color space for video defined by the National Television Standards Committee NTSC in 1953 and used in early color televisions This color space is also used in some Far East newspape...

Page 12: ...can not be represented in chro maticity diagrams using a standard RGB triangle As is the case with Wide Gamut RGB most of the colors defined in this profile can not be reproduced on monitors and print ers It is output to the host application as Wide Gamut RGB When scanning images into Photoshop 5 0 using this profile set the Photoshop RGB profile to Wide Gamut RGB Scanner RGB This profile replicat...

Page 13: ... wide area devoted to the reproduction of blues The corresponding RGB setting in Photoshop 5 0 is Color Match RGB Apple RGB compensated This profile defines tristimulus red green and blue chroma ticity as the intersection of the curve that marks the limits of the visible gamut with lines drawn from the Apple RGB white point and passing through the points that define tristimulus chromaticity in the...

Page 14: ...rum of 380 780nm The blue end of the spectrum 380nm is at the bottom left corner the red end of the spectrum 780nm at the bottom right corner The straight diagonal line connecting these two points represents the dif ferent shades of purple created by combining red and blue light The colors inside the area enclosed by these lines are created by mixing light of different wavelengths No color profile...

Page 15: ...50 0 3127159 2 2 2 2 2 2 2 2 2 2 2 2 0 3290015 0 3101 0 3162 0 3127159 0 3290015 0 3127159 0 3290015 0 3333333 0 3333333 0 3457029 0 3585386 700 525 450nm 0 64 0 33 0 67 0 33 0 64 0 33 0 64 0 33 0 735 0 265 0 7347 0 2653 0 3 0 6 0 21 0 71 0 28 0 65 0 21 0 71 0 274 x x y x x y x x y y x y x y y x y x y x y x y y x y x y x y x y y x y x 0 717 0 1152 0 8264 x y x y x y 0 15 x y x y x y 0 06 0 14 0 08...

Page 16: ...tem Folder Preferences Nikon MAID Profiles Macintosh The files containing the profiles listed in the RGB sheet are given below Profile File name sRGB NKsRGB icm Bruce RGB NKBruce icm NTSC 1953 NKNTSC icm Adobe RGB 1998 NKAdobe icm CIE RGB NKCIE icm Wide Gamut RGB NKWide icm Apple RGB NKApple icm Color Match RGB NKMatch icm Apple RGB compensated NKApple_CPS icm Do not use the Scanner RGB profile wh...

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