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Datacolor Spyder3 Elite Скачать руководство пользователя страница 56

Set LCD White Luminance

Help Index

Usual Setting

On LCD displays White Luminance may be adjusted by the Backlight control. The
Backlight control is often identified with a “sun” symbol. To begin, set this control to
its maximum value.

The Purpose of This Step

This step assures that the display is producing sufficient light so that it can be easily
viewed; but is not being overdriven, which could result in loss of highlight detail.

The Long Answer

If your display has a function to reset the Backlight control to its Factory Default value
then you should use that. This will probably set the control to maximum. If there is no
Factory Reset set the control to the maximum value. To adjust the display’s luminance
to the ambient lighting, choose the Ambient Light Compensation option.

Also observe the White Luminance visual guide:

You should be able to see four separate blocks inside the gray surround.

If you do not see four blocks:

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Содержание Spyder3 Elite

Страница 1: ...ent light level Select Luminance Mode Decide if you wish to target specific brightness endpoints Measured Luminance Mode Uses your Spyder to define black and white Specify Luminance Values Allows user to enter values for black and white Identify Controls Designate what general controls your display offers part of the New Display Assistant Identify Color Controls Designate what color controls your ...

Страница 2: ...rofile and calibration against a series of test image Expert Console Advanced option for seeing all the settings for a display in one screen SpyderCertifiedTM Allows users to define a display to be held to tight certification standards StudioMatchTM Allows users to define a studio target based on the capabilities of their monitors and their studio conditions In Closing Final suggestions and a chan...

Страница 3: ...cribes the monitor characteristics including White Point Tone Response and RGB Primary colors This profile is then used by ICC aware applications such as Adobe Photoshop InDesign or Illustrator so they can display colors as they are intended Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website www dataco...

Страница 4: ...lts Lighting Conditions For Monitors The lighting conditions in the room where you are viewing the monitor should be stable and repeatable If the light changes while you are viewing the monitor this can effect your color perception Calibrating in one lighting condition and then viewing in a different lighting condition should also be avoided Light should not fall directly on the display screen For...

Страница 5: ...reen Saver Screen Savers and Energy Savers should be turned off before calibration If the monitor turns off or dims during the calibration process the process will have to be repeated If the monitor goes to sleep and wakes up again during regular use color accuracy will be affected until the monitor warms up again Further Information For information such as a list of Frequently Asked Questions and...

Страница 6: ...itor has Brightness Contrast etc Also on this screen New Display there is a checkbox where the user can indicate whether they want the software to calibrate this display If this checkbox is not marked then the application will ignore the corresponding display not offering to calibrate it and on the Windows operating system not trying to apply calibration data to that display s video card upon comp...

Страница 7: ...isplays may need to have a separate video card for each display Multi head video cards a single card that drives two or more displays that are not PCI Express cards often are not capable of holding unique calibrations for multiple displays Each display must have its own profile created specifically for that display associated with it Associating different profiles to displays attached using a mult...

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Страница 9: ...r will be adjusted Settings include White Point the color of white Tone Response often called Gamma and optionally Black Luminance darkness and detail at the black end White Luminance brightness and detail at the white end If you want to calibrate to values different than those shown you may click the Change button to see other choices Why choose one calibration setting over another Calibrating to...

Страница 10: ... or proofing lights can make display to print matching easier More advanced settings and options are described elsewhere in the Help files If in doubt start at 2 2 6500 unless you find a specific reason to use other settings Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website www datacolor com Spyder3 ...

Страница 11: ...or s output luminance relates to the input signal In practical terms tone response mostly affects the lightness of the middle and quarter tones of images displayed Generally higher gamma values e g 2 2 cause images to appear with more contrast and color saturation usually with a loss of shadow detail Lower gamma values e g 1 8 cause images to appear with less contrast and saturation but with more ...

Страница 12: ...Gamma 2 2 If you want to specify a Tone Response that is not a gamma curve click the Curve button and be sure to read the Help section accompanying the Curve screen Further Information ...

Страница 13: ...For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website www datacolor com Spyder3 ...

Страница 14: ... response of the monitor The Long Answer Tone response is a description of how the monitor s output luminance reflects the input signal In practical terms tone response mostly affects the lightness of the middle and quarter tones of images displayed Cineon If you want to specify a Tone Response that is not listed in the popup menu click the New button to create a new curve to your specifications I...

Страница 15: ...Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website www datacolor com Spyder3 ...

Страница 16: ... Custom Curves Window you can define the shapes of the Composite Red Green and Blue curves by moving any of the seven adjustable control points up or down with the up down arrowheads below each control point The input and updated output value for the active point will be displayed below in the Input and Output fields Checking the Preview checkbox will cause the curve adjustments to effect your dis...

Страница 17: ...eye will correct for the native White Point and your images will look fine The Purpose of This Step This screen allows you to specify the desired White Point to which the application will calibrate the display device The Long Answer White Point is a value that describes the color of white displayed on the display Generally this is described in terms of degrees Kelvin Lower Kelvin values i e 5000K ...

Страница 18: ...an select Other and enter a desired white point in either degrees Kelvin or CIE xy If you do not want to change the White Point from the current hardware setting then choose Native If you do this you will not be prompted to adjust the monitor controls for White Point e g Kelvin Presets or RGB Gain controls and the software will not make any adjustment to the White Point as part of the calibration ...

Страница 19: ...software will not make any adjustment to the White Point as part of the calibration i e no White Point adjustment in the Look Up Table since this adjustment has already been ma de with RGB Gain controls Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website www datacolor com Spyder3 ...

Страница 20: ... Purpose of This Step To identify the type of display you are calibrating so that the correct process can be run CRT Display CRT Displays are heavy and deep They generally resemble traditional television sets made with glass picture tubes ...

Страница 21: ...r Notebook computers have built in processors and keyboards as well as LCD screens Choose the Laptop mode to calibrate this type of display Projector Front Projectors have a lens and display large images on a screen that is placed several feet away Some use LCD technology while others use DLP Both are calibrated using Projector mode ...

Страница 22: ...Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website www datacolor com Spyder3 ...

Страница 23: ...u will use to calibrate your display Target values must include White Point the color of white on your display Tone Response often called Gamma The Target may optionally include Black Luminance how black your display s blacks are White Luminance how bright your display s whites are Certification to define this as a SpyderCertifiedTM display Each selection in the Target popup is a set of these valu...

Страница 24: ...ly through a calibration process setting all of the Target values and then after Calibration is complete choose Save Target As from the File menu to create a Target that records all of the values used for that Calibration That Target will then be available in the Target popup to use for future calibrations or other monitors Further Information For information such as a list of Frequently Asked Que...

Страница 25: ...eases The best procedure is to keep your ambient light conditions constant and appropriate while you are doing color critical work If you choose to turn Ambient Light Compensation On then the program will measure your surrounding room light and suggest any appropriate changes to your calibration target values and or ambient light conditions The Long Answer This analysis identifies the ambient ligh...

Страница 26: ...edium light levels Only LCD displays including brighter laptops can be used at this level An example of medium ambient lighting would be a photographer s customer consultation area typically not kept as dim as the actual color correction studio 4 High uncontrolled not recommended for color critical work Lower the ambient light if possible otherwise use a monitor hood and calibrate the display to t...

Страница 27: ...le with your monitor Critical color work requires an environment where the ambient light is consistent and at low to moderate levels For more detailed information on Ambient Lighting Monitor Surround and the relationship between Luminance and White Point see the Ambient Light Analysis Help Page cd m 2 is a measurement of the amount of light a device emits cd m 2 is an abbreviation for candelas per...

Страница 28: ...taken of those conditions These settings are recommended for best calibration under your current conditions You may choose to adjust your ambient light levels and remeasure to obtain more desirable results The Long Answer This analysis identifies the ambient light condition as one of five levels Very Low Moderately Low Medium High Very High For each level the analysis provides A description Sugges...

Страница 29: ... color response at medium light levels Only LCD monitors including laptops can be used in this situation High uncontrolled not recommended for color critical work Lower the ambient light if possible otherwise use a monitor hood and calibrate the display to the maximum White Luminance it can produce and a White Point of 6500K or higher Very High uncontrolled not recommended for any color managed wo...

Страница 30: ...edium gray cloth is the best solution to situations where the wall color brightness and windows cannot be otherwise controlled Advanced Topic Luminance and White Point Each ambient light level has a recommended White Luminance that is based on keeping monitor brightness high enough for good perception of the full display range and avoiding White Point adaptation by the eye to whites in the Surroun...

Страница 31: ...or beyond the Medium ambient level with increased White Point recommendations to match cd m 2 is a measurement of the amount of light a device emits cd m 2 is an abbreviation for candelas per meter squared Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website www datacolor com Spyder3 ...

Страница 32: ... conditions or by measuring with the instrument The Long Answer When Visual is selected your monitor will be calibrated to produce the most White Luminance it can without being over driven The Black Luminance will be set as low as possible to produce a good black without losing shadow detail This is ideal for most users who are not attempting specialized matching modes with more than one monitor i...

Страница 33: ...nce Values you will want to use this mode If you decide that you want to select Measured Luminance Mode you will need to determine the appropriate Luminance Values This is discussed in the Help for the Specify Luminance Values screen Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website www datacolor com ...

Страница 34: ... calibrations will then run in Measured Mode using the appropriate values for your display If you select a different White Point then you will again be notified that a Visual Mode calibration will be performed The White Point can affect the White Luminance value If you have specific Luminance Values that you want to use for calibration you can enter them into the Luminance fields after setting the...

Страница 35: ...For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website www datacolor com Spyder3 ...

Страница 36: ...s provides more consistent settings from one calibration to the next Black Luminance Choices Measured Luminance Mode uses Target values for Black and White Luminance Leaving the Black Luminance unspecified causes the software to fill this blank with the Native Black Luminance for your display your display s blackness at its current hardware settings Native Black Luminance is often the most appropr...

Страница 37: ...eally you should use a print viewing booth or a specialized print viewing lamp Both the luminance level and the color of the print viewing illumination must be controlled If you are doing screen to print comparison you may wish to adjust the White Luminance level of the monitor so that it more closely matches the perceived luminance of a sheet of blank printer paper as seen under your print viewin...

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Страница 39: ...t LCD MONITORS This control is found on some LCD monitors If your LCD monitor has only one control and it is marked with the sun symbol for example most Apple LCD monitors then it is likely that you have only a Backlight control Sometimes this control is marked Brightness but there is no corresponding Contrast control This control will be used to adjust the White Luminance level of the monitor If ...

Страница 40: ...en Menu becomes illegibly dark along with the rest of the screen then this is a Backlight control if the On Screen Menu remains visible while the rest of the screen goes dark then this is a Brightness control Brightness and Contrast LCD MONITORS AND PROJECTORS If you have two controls either labeled explicitly Brightness and Contrast or with the symbols above then you have Brightness and Contrast ...

Страница 41: ...te Luminance then you will see the four blocks of gray change in intensity You may even see the third block disappear turn White as you adjust the control to its maximum setting Brightness Contrast and Backlight Some monitors have all three of these controls Sometimes both the Backlight control and the Brightness control are labeled with the sun symbol Because of the wide variation that occurs in ...

Страница 42: ...ature ViewMatch Color User Color Custom Color Color Manager and others These controls are for setting the White Point in the display Also known as Color Temperature this refers to the color of white On a monitor white is made up of Red Green and Blue there are many RGB tones that can be seen as white if they are the lightest tone in your field of view These are referred to as White Point Color Tem...

Страница 43: ...hree for white and three for black Only adjust the controls for the white usually labeled Gain or Contrast Do not adjust the controls for black usually labeled Bias or Brightness they are not intended for adjustment with this tool Some displays have only two sliders typically Red and Blue with the third channel fixed You can still use the RGB slider adjustment screen to balance the whitepoint of s...

Страница 44: ... the display you can get very good results by just using the preset Also it is not necessary to adjust your RGB Gains Controls every time you calibrate your display Usually the balance between color channels will remain consistant for several months though running this step allows you to check the balance and determine if you would like to make minor adjustments If you want exacting White Point co...

Страница 45: ...ffecting the White Point balance Your goal is to make all three columns of the RGB Graph the same height When the columns are level the top of the columns will be inside the black rectangle Be aware that the three colors interact with each other For example if Green is too high then you may either reduce Green or increase Red or Blue This will take a little experimentation If possible start with a...

Страница 46: ... is less than 0 5 Kelvin Target the value that you specified earlier as the desired white color White Point to calibrate the monitor to in degrees Kelvin Current the current measured white color in degrees Kelvin Luminance Target if Measured Luminance Mode has been specified then this will show the desired White Luminance value that was entered for the calibration Current the current measured Whit...

Страница 47: ...with a single display an exact White Point is not critical any value that the eye sees as white and that relates to a white sheet of paper under your print viewing lighting will work reasonably well Using a White Point of 6500K has the advantage of matching the White Point of the most common RGB working spaces e g AdobeRGB sRGB so that non color managed applications will offer the closest match fo...

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Страница 49: ...that matches the White Point target value that you are calibrating to If an exact match is not available then choose the next higher value for example if your target is 6500K and your available presets are 5000K and 6550K choose 6550K For users with a single display an exact White Point is not critical any value that the eye sees as white and that relates to a white sheet of paper under your print...

Страница 50: ...for that specific combination Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website http www datacolor com Spyder3 ...

Страница 51: ...Factory Default values may affect the display in undesirable ways Adjusting these controls on LCD displays can lead to reduction in dynamic range and distortion of the Tonal Response Curve PROJECTORS Brightness and Contrast controls are not of much use on projectors where brightness is affected by distance from the screen and black is effected by ambient light levels Adjusting these controls away ...

Страница 52: ...r 100 Invoke the Reset command and check that the Brightness and Contrast values have been changed to something else Default values are often end conditions like 0 or 100 sometimes midpoint conditions like 50 In the following screens instructions for adjusting the Brightness and Contrast controls are provided Such adjustments could be necessary in the unlikely case of a display that does not have ...

Страница 53: ...s with projectors we recommend that you leave the Brightness control set at its Factory Default value This recommendation is given regardless of the type of technology used in the projector LCD DLP etc LCD DISPLAYS For LCD displays because of the large variation in controls and behaviors that they exhibit it is not possible to provide one single set of instructions that work for all displays excep...

Страница 54: ...fuse it with the Backlight control Backlight controls and Brightness controls are sometimes labeled with the same type of sun symbol On an LCD display Black Luminance is sometimes controlled by the Brightness control The Brightness control is often identified with the sun symbol The Brightness control is sometimes labeled Black Level Set this control to the lowest setting that still allows you to ...

Страница 55: ...e blacks In bright office lighting it may be impossible to distinguish all four blocks on many displays For serious color work it is recommended that you work in very subdued lighting for CRT displays and subdued lighting for LCD displays Loosening half or more of the bulbs in office fluorescent fixtures and closing blinds on nearby windows is usually necessary to create appropriate display viewin...

Страница 56: ...ot being overdriven which could result in loss of highlight detail The Long Answer If your display has a function to reset the Backlight control to its Factory Default value then you should use that This will probably set the control to maximum If there is no Factory Reset set the control to the maximum value To adjust the display s luminance to the ambient lighting choose the Ambient Light Compen...

Страница 57: ... have only a Backlight control Sometimes this control is incorrectly labeled Brightness but there is no corresponding Contrast control Treat such a control as a Backlight control If you have two controls either labeled explicitly Brightness and Contrast or with the sun and half moon symbols then you have Brightness and Contrast controls This typically means that you do not have a Backlight control...

Страница 58: ...ows is usually necessary to create optimal monitor viewing conditions in offices In instances where this is impossible or undesirable using LCD displays offers better viewing balance than the dimmer display of CRT screens Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website www datacolor com Spyder3 ...

Страница 59: ...if its controls have been adjusted then re calibration will be recommended The Long Answer Conventionally monitor calibration products simply alert the user to re calibrate the display after a period of time has passed Whether or not re calibration is actually necessary at that time can be determined by taking a few measurements fewer than re calibration takes If the current calibration is still v...

Страница 60: ...ance will decay over time As this decay occurs the calibration needs to be updated to keep the display performance constant Current Calibration displays the current just measured values of important characteristics for the display which are controlled by calibration The application will compare the Current values to the Target values and make a determination as to whether re calibration is needed ...

Страница 61: ...ly the best choice in all cases CRT displays generally do not need additional gray balancing during calibration therefore some users turn off this option for their CRTs to accelerate the calibration process Our current experience with projectors shows mixed results In many cases LCD based projection devices work better with gray balance turned on and DLP based projectors work better with it off bu...

Страница 62: ... is loaded into the video card the application will then take readings to see how close the calibrated display is to the desired target value At points in the gray ramp the program will adjust the calibration slightly and then measure the display again to see if the result is closer or farther from the target This process will take several minutes as the application steps through the gray ramp twe...

Страница 63: ...B channels which can result in a color cast Normal calibration depends on the user being able to adjust the White Luminance of the display using controls on the display itself Some displays have no such control or their control may not have sufficient range to reach an appropriate setting White Luminance can also be adjusted in software by the calibration Normally this is not done because it can r...

Страница 64: ...removed from the screen The Long Answer The Spyder is no longer needed on screen and can be returned to its stand Leaving it on screen will interfere with reading further instructions Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website www datacolor com Spyder3 ...

Страница 65: ...u calibrate then the new profile will overwrite the previous profile This will prevent a buildup of outdated device profiles from previous calibrations and is recommended practice Using a unique name each time will allow you to save outdated display profiles for comparison The History function eliminates most need for saving outdated display profiles Additional Profiles For Projectors If you are c...

Страница 66: ...to re launch any currently running color managed applications for them to notice the change Photoshop on Mac and Windows will generally recognize profile changes on the fly but other programs may not Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website www datacolor com Spyder3 ...

Страница 67: ...g conditions as well The Long Answer Spyder Utility is installed as a Startup Item on your computer It has a number of functions These include Assuring that your display profiles and their matching calibration data has been loaded at startup for each calibrated display Checking at frequent intervals that the correct profiles and calibration data are still in use Checking that the more stringent st...

Страница 68: ...For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website http www datacolor com Spyder3 ...

Страница 69: ... of This Step To allow users to review the results of their new profile before moving on to using it The Long Answer SpyderProof is a software interface and feature set intended to replace the Before and After and Print Preview screens in previous Datacolor products It consists of a matrix of 16 carefully selected images covering a wide range of subjects and lighting conditions and controls to man...

Страница 70: ...an individual image in the quadrant view will further zoom to fill the window with that single image Clicking on the individual image will return to the overview image The Enlarge Image button will open whichever image or group of images is currently being viewed in a resizable floating window for a more detailed view SPECIAL TIP Using the Control key while clicking on the Image Window will replac...

Страница 71: ... profiles for same monitor but with different hardware adjustments neither of which would be valid Print Popdown list will default to printer profile just created Spyder3Print or short list of typical device types to emulate Spyder3Pro Elite such as photolabs and typical inkjet inks and papers Checkbox will allow user to toggle Print Proof on and off Changing profiles in popdown will proof to othe...

Страница 72: ...on glossy luster media will reach all but the most saturated reds in this image but matte art papers will also be unable to accurately portray many of the dark green areas Image Two Pottery q1i2 jpg This image offers an excellent range of unusual saturated colors lime greens oranges purples golden yellows Also excellent french grays black rims and specular highlights On screen this demonstrates mo...

Страница 73: ...tail capabilites on screen and in print This image was shot in full sun at high altitude which further enhances color detail and saturation On screen this demonstrates monitor high saturation channels and blends In print it tests high saturation inks and blends in many colors This image emphasizes detail not smoothness of gradients Skin Tones Quadrant Image One PortraitColor q2i1 jpg This portrait...

Страница 74: ...fers a challenge for printer drivers in producing dark blues with texture detail The Orchids display a wide range of near white tones and can be used to check for highlight detail on screen and in print Fabric detail in both the pink and blue fabrics will show ability of device to produce differing tones in these colors Image Three Cuba q2i3 jpg Another excellent check of highlight details in the ...

Страница 75: ...ltilayered transparency Landscape and Gradients Quadrant Image One Stone Vase q3i1 jpg Exceptional range of greens from a yellowish grass green to deep evergreen with green shadow tones and dark shadow detail plus stone vase neutrals gradiating from near highlights to shadow tones with fine detail throughout to show posterization effects Garden bench in the deep shadows in the background provides ...

Страница 76: ...Unusually pure sky gradient from pink to purple and white in sky Subtle mountain blue gradient right to left Unusual shadow detail in ochre tones in forground which are particularly challenging to print without losing saturation Image Four Landscape q3i4 jpg Excellent pastel colors in full pallette reds oranges yellows greens blues plus purple shadow details Tells a great deal about monitor whitep...

Страница 77: ...ght elements and darker backgrounds as well as wood grain detail and other darktone patterns This image is a good test for gamma how light or dark the midtone on a device appear Image Three ScooterB W q4i3 jpg Very smooth gradients in a wide range of tones Highlight detail in white paint and upholstery deep shadows in handgrip texture Selective focus produces smooth gradients in edge areas The wel...

Страница 78: ...stepped gray ramp for checking distinct values Review the enlarged details above each image for highlights and shadows The Trees in Fog detail checks fine distinction in neutrals while the Boat Planks Reflection checks the ability to distinguish deep shadow details Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visi...

Страница 79: ...ected in the Console will trigger the same lists options and processes that would occur in the Assistant based workflow The New Display Assistant and StudioMatchTM Assistant should be run in advance of the Expert Console to define characteristics of displays and to determine multiple display targets automatically Expert Console Features The overview below gives basic descriptions of the functions ...

Страница 80: ...ght Assistant will be run as part of future calibrations this is not necessary once an appropriate Ambient Light level has been established Real Time Monitoring detemines whether Ambient Light will be monitored continuously while the computer is in operation Current Ambient Light Level lists the currently defined Ambient Light Level and the Measrure button below it allows a new Ambient Light Readi...

Страница 81: ...if the display required recalibration at this time Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website http www datacolor com Spyder3 ...

Страница 82: ...ation status is indicated on the display by a small icon in the menu bar on Macintosh or a small icon in the System Tray on Windows If the display is out of certification the user can select an item from the Spyder Utility menu for an explanation of what conditions have been violated and how to return the display to certified state Specifically the parameters which define Certification are The pro...

Страница 83: ...has been turned on for at least the time specified in the Spyder Utility s preferences Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website www datacolor com Spyder3 ...

Страница 84: ...multiple video cards If you are running the Windows operating system see below for issues regarding multi head cards In this process the application will take measurements of each attached display and then mediate their capabilities with the desired target settings selected by the user and also the ambient lighting conditions Then all displays will be run through the calibration process to adjust ...

Страница 85: ...lays that are not PCI Express cards often are not capable of holding unique calibrations for multiple displays Each display must have its own profile created specifically for that display associated with it Associating different profiles to displays attached using a multi head video card may not function correctly under Windows Computers using the Macintosh operating system do not have this issue ...

Страница 86: ... weeks is reasonable You may set a calibration reminder in the Preferences Calibration Interval How often should you calibrate Daily fanatical Weekly demanding Bi Weekly reasonable Monthly OK Yearly not acceptable We hope to see you again in a couple of weeks Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our ...

Страница 87: ...ce values from minimum to maximum Channel This menu allows you to choose to view plots for all channels simultaneously or to view plots for just the Red Green or Blue channels individually Curves Target When this checkbox is marked a plot is shown of the desired target tonal response that has been specified by the user For example if the user specifies a Target of Gamma 1 8 then the plot that is s...

Страница 88: ...get curve display off and on to compare it with the Calibrated curve Correction When this checkbox is marked a plot is shown of the actual correction curves that are downloaded to the lookup table LUT in the video card This lookup table is calculated to adjust the tonal response of the monitor from the uncalibrated behavior to the desired target behavior The Correction curves are plotted using the...

Страница 89: ...ach sample displayed the output luminance of the monitor is measured with the colorimeter instrument The resulting table of input RGB vs output Luminance values is then plotted Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website www datacolor com Spyder3 ...

Страница 90: ...s displayed by the monitor before any adjustment has been performed Target The desired or target values specified by the user These values can be set in the Specify Luminance Values screen when Measured Luminance Mode has been selected These values will be displayed to guide the user when they are setting the Black and White Luminance levels during a Measured Luminance Mode calibration The Target ...

Страница 91: ...its uncalibrated state That is the chromaticity value of the white point before any adjustment has been performed Target The desired or target value specified by the user This value can be set in the Select Target screen or the Select White Point screen Calibrated The value measured when the monitor is in its calibrated state That is the chromaticity value of the white point after being adjusted T...

Страница 92: ... less than 3 is good Less than 2 is quite good Less than 1 is excellent but not often achieved in practice if you get Delta E less than 1 consider taking a trip to Las Vegas 50 Gray This is simply an informative item that provides an indication of how well the calibrated monitor is tracking gray chromaticity This is an indication of the gray tracking of the monitor hardware The value is calculated...

Страница 93: ...pted to adjust the Brightness control based on observation of a visual target that should result in an appropriate Black Luminance level While this may seem unscientific optimal black luminance is affected by ambient light Since this is the case a visual judgment by the end user that takes into account ambient light often yields a better result than if a number was to be handed down through the ag...

Страница 94: ...nthesis which provides an indication of how closely the measured curve actually matches the gamma curve being indicated Uncalibrated The value measured when the monitor is in its uncalibrated state That is the gamma of the display before any adjustment has been performed Target The desired or target value specified by the user This value can be set in the Select Target screen or the Select Gamma s...

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Страница 96: ...r back in Select Spyder3 When the sensor is found the SN and Version fields in Sensor Information will be filled in Port There is no need to make any selection to this menu When Spyder3 is selected this menu will change to USB Recalibration Warning You can indicate whether you want the Spyder Utility to remind you to re calibrate the display after a period of time You can also disable the reminder...

Страница 97: ... is a newer version available and if so inform the user If you do not want the program to do this then unmark the checkbox Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website www datacolor com Spyder3 ...

Страница 98: ...erent levels here Basic No options are presented just runs Calibrate and Profile Classic Some options Gamma White Point Some adjustments Black and White Luminance Advanced All options including arbitrary response curves All adjustments including RGB Gains Delta E Warning Level This specifies the Delta E level which will trigger the Exceeded Delta E warning dialog The default value is 3 The warning...

Страница 99: ...er the White Luminance of the display being calibrated as part of the Look Up Table LUT that is downloaded to the video card This can however result in some loss of dynamic range for the display It is always best to adjust White Luminance using a control on the display if possible Explanation of Delta E White Point This is a measure of how close the calibrated White Point is to the desired or targ...

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Страница 101: ...ion tag chad and have their Media White Point tag wtpt set to D50 Additionally the header contains a valid MD5 fingerprint for the Profile ID Chromatic Adaptation Mode When recording colorimetric values in a profile XYZ values need to be Chromatically Adapted from their measured color space to the D50 color space that is used by the ICC profile There are different Adaptation Algorithms that can be...

Страница 102: ...e XYZ Scaling algorithm for Chromatic Adaptation when creating ICC profiles Further Information For information such as a list of Frequently Asked Questions and details on all Datacolor products be sure to visit our website www datacolor com Spyder3 ...

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