Christie CP2000-X Manual do Utilizador descarregar pdf (Página 78)

BASIC OPERATION

3-36 CP2000-X User Manual

020-100031-01 Rev. 1 (03-2009)

IMPORTANT

: “Create MCGD” is a permanent over-write

of any previous MCGD

“OnSite” file, and will define new default color processing in the projector.

TARGET (TCGD) and CREATE TCGD NOTES: Upon opening the Gamut menu, the

“Target (TCGD)” color fields show the corresponding x/y color coordinates defined

for the current target color gamut in use. You can create a new custom target by

defining different coordinates for one or more TCGD colors (or simply by changing

the tolerance state), and saving as a new TCGD file. Note, however, that industry-

defined TCGD standards, such as P7v2 and others, are write-protected and cannot be

changed—modifications to such a target must be saved under a new TCGD filename

entirely. Once you have created a new TCGD file, it will appear in the Custom menu,

where it can be selected for use in the display.

NOTE: For most applications, TCGD values are used simply to verify that displayed

colors actually do match the standard—i.e., you can measure each color at the

screen and compare its coordinates to those appearing in the TCGD fields to confirm

that the projected colors are accurate. For special applications

in which you want to

create a unique target color standard, enter new TCGD coordinates as desired, and

then save as a new TCGD file. Apply as usual from the Custom

menu.

GAIN NOTES: Gain indicates the luminance (a.k.a. brightness or intensity) of each

color as compared to full-on white, ranging from 0 (0%) to 2 (100%). You may want

to modify one or more gain values to precisely match color levels in other adjacent

displays or to accommodate a studio’s internal color management technique. Gain

would rarely, if ever, be adjusted for theatre use.

WHITE TOLERANCE NOTES: If desired, the chosen target for white (“White” x/y)

coordinates under “Target (TCGD”) may be relaxed by establishing a small

“tolerance box” around it. This box represents four coordinates (0-1-2-3) plotted on a

1931CIE Chromaticity graph, and may vary from TCGD to TCGD. If desired, define

new tolerance coordinates for the current TCGD to increase or decrease this tolerance

area, or to change its shape or location—larger boxes relax the tolerance, reducing

the loss of light caused by precise matching.

Clear the checkbox if the projector’s

whites must precisely match the target

white point (typical for telecine use)

defined for the current TCGD. If this

match can be anywhere within the

tolerance box (typical for theatre use),

enter a checkmark. The checkbox status

is saved with the TCGD. Keep in mind

that some light is usually discarded for

an exact match, resulting in a dimmer

image—it is recommended that you

enable the tolerance box for all

applications requiring maximum

brightness, such as in theatres. Do not

enable the tolerance box if exact color performance is more crucial than overall

image brightness, such as in telecine applications.

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