NEC Spectraview 3090 Users Manual
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31 | SPECTRAVIEW II - USER’S GUIDE Contrast Response Max error - shows the highest percentage error deviation from the Barten Model curve, as well as the JND Index of the highest error point. Show Barten Model - shows the Barten Model curve on the graph. The Barten Model curve is calculated based on the measured Intensity (white luminance) and black level values. Show 10% Limits - shows two lines representing 10% error deviations from the Barten Model curve. Medical displays used for Primary...
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32 | SPECTRAVIEW II - USER’S GUIDE C\fl\frimeter \bind\f\b The Colorimeter tool allows measurements of colors displayed on the screen to be taken with the calibration sensor, and is accessed from the Tools menu. The measurement results are displayed in a variety of useful formats. To take color measurements using the Colorimeter, place the calibration sensor to the screen so that it is centered on the large white area in the Colorimeter window. Measure: • Single -...
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33 | SPECTRAVIEW II - USER’S GUIDE Ambient Light Measurement \bind\f\b The Ambient Light Measurement tool allows measurements to be taken of the ambient light of the viewing environment around the display monitor. This feature is only available when using a supported color sensor. Currently supported color sensors are: • X-Rite/GretagMacbeth Eye-One Display V2 • X-Rite/GretagMacbeth Eye-One Pro • X-Rite ColorMunki • Datacolor Spyder3 These measurements are useful in determining...
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34 | SPECTRAVIEW II - USER’S GUIDE M\fnit\fr Settings \bind\f\b The Monitor Settings window provides access to some of the display monitor control settings, if supported by the display. The Power LED Indicator controls can be used to change the color of the LED, and also adjust the brightness. The brightness can be reduced as necessary in dim environments if the LED is distracting. The ColorComp control adjusts the screen uniformity correction applied to the display in order to improve the screen...
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35 | SPECTRAVIEW II - USER’S GUIDE Menus File menu Open Target... - opens a Target file. This is the same as clicking the Target Settings: Open button. Save Target As... - saves the current Target Settings to a file. This is the same as clicking the Target Settings: Save button. Calibrate... - starts the display monitor calibration routine for the currently selected display using the currently selected Target Settings. This is the same as clicking the Calibrate button. Generate ICC Profile... -...
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36 | SPECTRAVIEW II - USER’S GUIDE 3 Calibra\fion Overview Introduction to displa\f monitor calibration Computer display monitors display images by giving off light from the screen. On LCD display monitors, light is emitted from a backlight source such as fluorescent lamps or array of LEDs (Light Emitting Diodes) and passes through individual red, green and blue filters for each pixel on the screen. Combining red, green, and blue light, known as additive primary...
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37 | SPECTRAVIEW II - USER’S GUIDE SpectraView includes several industry standard targets for a variety of applications: Target NameApplicationWhite Point CIE (x,y) Tone Response Curve (Gamma) Color Gamut Print StandardCommonly referred to as Proofing Standard. Used widely for the proofing of color transparencies or press output. D50 (0.346, 0.359)1.8Native (Full) Photo EditingUsed for editing and previewing images in a controlled lighting environment. An Intensity of 140...
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38 | SPECTRAVIEW II - USER’S GUIDE About Targets SpectraView can also create custom Targets, which can then be exchanged with other SpectraView display users, providing identical calibrated displays. A Target consists of up to five specifications that describe the color characteristics of the display: • Gamma or Tone Response Curve (TRC) • White Point • Intensity • Contrast Ratio • Color Gamut Gamma and T\fne Resp\fnse Curves (TRC) The Gamma or Tone Response Curve of a display is the relationship...
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39 | SPECTRAVIEW II - USER’S GUIDE Intensity Intensity specifies the luminance or “brightness” of white when displayed on the screen. The maximum Intensity value of the display will depend on the color temperature of the White Point selected, the type of monitor and its age. The choice of Intensity value will depend on the application and viewing environment. If the display is being used in a very bright environment and there is no visual reference (such as a proof in a lightbox),...
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40 | SPECTRAVIEW II - USER’S GUIDE Launching As SpectraView launches, it will automatically search for any supported displays, and a supported color sensor. If SpectraView is unable to detect either a supported display or the last selected color sensor, an error message will be displayed and the Calibrate button will be disabled. Refer to the Troubleshooting section of this manual. Selecting a calibration Target A Target specifies the color characteristics of the display...