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NEC SpectraView Reference 241, User Manual

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Profiler

User Manual

4.6.3 V4 profile

If you check „ICC v4 profile“ SpectraView Profiler will create ICC profiles
according to the latest specification (including the correct chromatic
adaptation tag).
Under windows, v4 profiles do not make sense since the Windows color
management system ICM is not capable of utilizing these profiles (ACE,
the CMM built into Adobe products can handle v4 profiles).

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Summary of Contents for SpectraView Reference 241

Page 1: ...User Manual When Colour is Critical...

Page 2: ...g 12 3 Quick Start 17 3 1 The User Interface 17 3 2 Selecting a measurement device 20 3 3 Presets for calibration and profiling 22 3 3 1 Display type 24 3 3 2 Calibration method 25 3 3 3 Calibration s...

Page 3: ...d 38 4 1 Preferences 38 4 1 1 General preferences 38 4 1 2 Profile Creation 39 4 2 Select system profile 39 4 3 Chromaticity and gamut Spectral distribution 40 4 4 Calibration methods detailed 41 4 4...

Page 4: ...ile type 56 4 6 2 Chromatic adaptation 57 4 6 3 V4 profile 59 4 7 Review 60 4 7 1 Validation 60 4 7 2 Ambient light 61 4 7 3 Checking viewing booth 62 4 7 4 adJUST JUST viewing booth 63 4 7 5 Edit cal...

Page 5: ...Chapter 1 Preface...

Page 6: ...puters video card s Video LUT or automatically via hard ware calibration only with supported displays To maximize your color management results with SpectraView Profiler 4 1 it is important to calibra...

Page 7: ...Chapter 2 Installation and Licensing...

Page 8: ...Apple with Intel processor Mac OS X 10 5 8 or higher Minimum of 512 MB available system memory RAM Windows Intel Pentium III or 4 processor Windows XP with SP3 Windows Vista Windows 7 Minimum of 512...

Page 9: ...o either system will be indicated Before beginning the installation process please make sure that your measurement device is not connected to the computer Connect it after the software has been succes...

Page 10: ...Profiler 4 1 DVD ROM does not appear automatically go to My Computer and se lect the DVD ROM drive 3 Begin installation by selecting the SpectraView Profiler 4 1 Installer Follow the instructions on t...

Page 11: ...driver Follow the instructions for manual installation The SpectraView Profiler 4 1 DVD ROM includes a folder with all the sensor drivers for the Windows operating system 5 To start SpectraView Profil...

Page 12: ...the License button b If your computer is not connected directly to the Internet use another computer to access www spectraview nec display solutions com and click on Licensing Follow the instructions...

Page 13: ...TAN number or if you don t have a CD or don t have a TAN then go to the licens ing without a TAN section on the licensing website Your licensing request will be processed and after all technical and c...

Page 14: ...As soon as you receive your license file spectraview_profiler4_xxxx lic click on the button Load License and install the license file to the application Now the application is unlock and ready to use...

Page 15: ...can check the status of your license in the SpectraView Profiler Licensing window The License menu opens the Licensing window and shows the status of your license in the top left corner In our exampl...

Page 16: ...Chapter 3 Quick Start...

Page 17: ...ystems Because the color management system of Windows doesn t support profiles for more than one display connected to one graphics card without additional utilities Measurement device In this area of...

Page 18: ...View Profiler If you would like to use other settings than those defined in the presets you can enter them in the following windows by clicking Next You will be guided through the process step by step...

Page 19: ...n and profiling of your monitor will start immediately with the settings that are shown in the main window of SpectraView Profiler You can also start the express calibration and profiling process at a...

Page 20: ...ents A wrong mode can result in a color cast Spectrophotometers do not require different calibration modes Spectral is a universal mode for CRT and LCD dis plays You can use these devices for CRT and...

Page 21: ...next time The measurement device will be pre selected You will only be asked to calibrate the measurement device before you start the calibration and profiling process the next time Tip Calibration of...

Page 22: ...ctions stray light Turn the monitor off and check if you can see any reflections of light sources on the screen If so you need to change the monitor position and or to shield the monitor with an ambie...

Page 23: ...ease deactivate all screen savers and the power management of your operat ing system Otherwise incorrect measurements can occur during the calibration and profiling process Position of the measurement...

Page 24: ...rent settings will be explained in more detail in the following part of this chapter 3 3 1 Display type Under this point you need to select your display type first After the first start SpectraView Pr...

Page 25: ...mputer this option will show up in SpectraView Profiler and will be selected automatically If you connect a monitor to your system which doesn t sup port hardware calibration this option is grayed out...

Page 26: ...not support video LUTs A software calibra tion will fail on these systems But you can use this option to create an ICC profile for these systems You can also use this option if you want to just profil...

Page 27: ...process and makes working with SpectraView Profiler much easier You can even make your own presets Please find a detailed explana tion in the extended part of the manual chapter 4 If you like one of...

Page 28: ...iler offers you some presets for profiling as well You can select the base on which SpectraView Profiler will create and calculate the ICC profile for your monitor The selected profiling set will set...

Page 29: ...ing to your settings Since you have selected presets you can skip the options Color temperature Tonal response curve Luminance contrast and Profile in the control panel If you want to deviate from the...

Page 30: ...or Brightness should be set to minimum 0 or to a level that allows you to see something on your screen If the black measurement patch looks gray then brightness is too high After this rough pre adjust...

Page 31: ...emperature LCDs and CRTs Most of the monitor OSDs offer various possibilities to set the color temperature If possible select a mode that allows you to adjust each channel R G and B separately This is...

Page 32: ...me level in the green area of the diagram The measurement value has to be as close as possible to the desired value If this is not possible set the color temperature to a value which is slightly highe...

Page 33: ...ng Done and Close This will take you back to the main window of SpectraView Profiler Now your monitor is prepared for software calibration and profiling Do not change the monitor settings in the OSD b...

Page 34: ...de of the window you can see the measurement values during the calibration and profiling process delayed by one patch Click the Measure button to start the calibration and profiling process The measur...

Page 35: ...iew Profiler will show you the results of the calibration and pro filing process The measurement window will close automatically the ICC profile will be saved to the defined folder and the new ICC pro...

Page 36: ...ay not display correct colors any more Clicking Validate will open the well known measurement window Position the instrument on the measurement area and click Measure to start the validation process V...

Page 37: ...Chapter 4 Advanced...

Page 38: ...nges you make here will only become effetive after relaunching the application 4 1 1 General preferences Here you select the language for SpectraView Profiler User Interface Click tone Additionally yo...

Page 39: ...Startup Programs folder when you install SpectraView Profiler If you use a hardware calibrateable monitor neither of the operating systems provides a mechanism to download LUTs into the monitor Norma...

Page 40: ...a color triangle the gamut of your monitor in the x y diagram In the menu Window Spectral distribution or with the shortcut 1 you open an additional window that shows the spectrum of the actual measur...

Page 41: ...e SpectraView Profiler 4 4 1 Hardware combined HW SW calibration Hardware calibrateable monitors are connected to the computer via a digital data connection This could be a DDC CI video cable or a sep...

Page 42: ...nding Highlights and shadows can also be affected Hardware calibrateable LCD monitors work with signal processing of 10 or more bits per channel e g 10 bits 1024 steps If one channel should be reduced...

Page 43: ...ion would set automatically can be set manually but instrumented with the help of Hardware setup in SpectraView Profiler For optimal calibration and profiling results for soft proofing and high end im...

Page 44: ...uality altogether Higher quality LCD monitors like the NEC MultiSync family of monitors offer 10 or more bit data processing Only this type of monitors satisfies higher quality demands These monitors...

Page 45: ...loader downloads the calibration curves into the video card When changing the monitor profile the LUT loader must be launched manually in order to download the correct LUT The downside of a software c...

Page 46: ...or temperature and tone curve are not available in this mode Also adjustment of luminance and contrast can only be done manually SpectraView Profiler supports you with measurement values in setting th...

Page 47: ...Pre sets there is no need to select these parameters separately The ease of use of SpectraView Profiler has been enhanced considerably There are several sets of Calibration settings that come with Sp...

Page 48: ...ated CRT monitor approx 9300 K Color temperature only describes a certain color sensation not a specific spectral distribution So it s unknown how the measured x and y values are composed spectrally T...

Page 49: ...when all 3 channels R G and B Gains are set to max With this setting he luminance and gamut of the monitor are at their maximum Monitor s native is not recommended for color critical work in an ICC w...

Page 50: ...the advantages of the L a b with the representation of tone values on a monitor The L method calibrates your monitor in such a way that gray scales appear visually equidistant If you increase the R G...

Page 51: ...an Apple LaserWriter Thus gamma 1 8 became the typical Apple monitor gamma On a PC where you normally did your bookkeeping wrote letters and prepared presentations a more contrasty characteristic was...

Page 52: ...response curve cannot be described with a gamma function although Photoshop for example reports a gamma value of 2 2 In the shadows it resemble more an L curve in the mid tones and highlights it follo...

Page 53: ...r Apperance Model 02 CIECAM02 is to take care about the luminance of the ambient light of the room The monitors gradation curve can be optimized to the luminance of the rooms ambient light to optimize...

Page 54: ...he brightness of an LCD monitor or the contrast of a CRT the quantity of light and thus the white luminance will be reduced All monitors have a different native white luminance In order to be visually...

Page 55: ...instructions on the screen Contrast The ratio between brightest and darkest value of a monitor is called contrast ratio The higher the contrast ratio the better is the differentia tion of tonal values...

Page 56: ...e So only a certain number of color combi nations will be described in a profile the others will be interpolated mathematically Matrix based The simplest way to describe the color properties of a devi...

Page 57: ...tic adaptation can be observed by examining a white object under different types of illumination such as daylight blueish and incandescent yellowish The white object retains its white appear ance unde...

Page 58: ...nitors calibrated to a lower color temperature than D50 lineare Bradford A widely used newer chromatic adaptation transform is the Bradford transform It was empirically derived by Lam from a set of co...

Page 59: ...eate ICC profiles according to the latest specification including the correct chromatic adaptation tag Under windows v4 profiles do not make sense since the Windows color management system ICM is not...

Page 60: ...d with the reference values calculated from the ICC profile For each patch you will find a DeltaE information along with Deltas for L a and b separately display CIE LAB This check box lets you switch...

Page 61: ...order to measure ambient light you have to attach the ambient light head Gretag Macbeth EyeOne pro Not all Eye One spectrophotometers support ambient light measure ments you need one that came with th...

Page 62: ...luminance value of 500 125 lux and a color temperature of D50 Again attach the ambient light head to the instrument and hold the instrument towards the back wall of your viewing booth Make sure the ba...

Page 63: ...viewing booth at the workstation to each other Some of the JUST viewing booths are offering an USB interface which SpectraView Profiler can use to communicate with the viewing booth Via the USB interf...

Page 64: ...booth will be automatically adjusted to a luminance of 2000 lux This is the standardized luminance to compare artwork photos and or press prints to proofs This setting should not be used to compare e...

Page 65: ...cting the shape of the calibration curve If you click and drag the white point you reduce or increase white luminance in the selected channel Once you have reached 100 and continue dragging contrast b...

Page 66: ...re affected in the same manner Red Only the tonal response curve of the red channel will be affected Blue and green channels remain unaffected Green Only the tonal response curve of the green channel...

Page 67: ...Chapter 5 Product information SpectraView Profiler 4...

Page 68: ...or software product in whole or in part is strictly forbidden The information in this manual is furnished for informational use only is subject to change without notice and should not be construed as...

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