NEC SpectraView II Guia Del Usuario página 18

17 | NEC SPECTRAVIEW II - USER'S GUIDE
Contrast Ratio
Color Gamut
Several preset Color Gamuts are available in the list, or a custom gamut can be created. Click the Edit.. button to open
the Custom Color Gamut dialog.
By using the Native (Full) setting, the color gamut will be that of the LCD panel which will result in the widest possible
color gamut. Use this setting if you are using color managed applications such as Adobe Photoshop which use a Color
Management System to correctly convert colors for display.
Examples of typical usage scenarios when using a non-native color gamut can be beneficial:
Video Editing: When editing video in an application that is not color managed. In this case the video is typically
encoded and intended to be viewed on a display that either has SMPTE-C or ITU-R BT.709 color primaries. Since the
video editing application is not color managed, no color conversion is made between the colorspace of the encoded
video, and that of the display. If the display was set to the Native color gamut, video images would appear over-
saturated because they are being displayed directly on the wide color gamut display without any kind of compensation.
By setting the Color Gamut of the calibration Target to that of the encoded video, the display will handle the color
conversion that would have normally been done if the video was color managed, and will be displayed correctly
without being over-saturated.
Web Viewing: When viewing web pages using a web browser application and system that are not color managed,
images and graphics would otherwise appear over-saturated since they were probably intended to be viewed on a
typical sRGB gamut display. In this case using the sRGB Color Gamut as a Target will assign the display to handle
the color conversion so it appears to be an sRGB colorspace display, even though it is actually a wide color gamut
LCD panel.
Contrast Ratio allows a particular contrast ratio to be used if necessary.
The contrast ratio is the ratio of white to black luminance.
Selecting Monitor Default will calibrate the display to the highest possible
contrast ratio, which is limited by the display technology, the selected
White Point, Intensity value, and other factors.
In some applications, such as simulating low contrast images such as
in newsprint, it is useful to have a lower contrast ratio than the display's
native value. Contrast Ratios in the range of 50:1 to 500:1 can be selected.
Note:
If the selected contrast ratio is higher than what the display is actually
capable of achieving, then the display will calibrate to the highest possible
contrast ratio. If a specific Contrast Ratio is selected, it is recommended that
the number of Calibration and Measurement Steps be set to at least 32 in the
Preferences dialog.
Color Gamut allows a particular color gamut to be selected if
the display supports color gamut adjustment. The color gamut
is the range of colors that can be displayed by the monitor, and
is defined and bounded by the red, green and blue primaries
which together make up all other colors.
Note:
Depending on the display model, this control may be
disabled or limited to Native and sRGB.
For advanced models such as the MultiSync PA series, the
color gamut can be fully controlled and customized, and the
internal SpectraView engine will manipulate the primary colors
in order to display different colorspaces.