Christie CP2000-M User Manual download pdf (Page 87)

3-40 CP2000-SB User Manual

020-100162-04 Rev. 1 (05-2009)

Section 3: Operation

LETTER BOX NOTES:

Letter Boxing ensures that all image data is displayed and its aspect ratio is maintained.

Use letter box for virtually all normal operation. It ensures that all incoming data will be displayed within your

defined presentation area, and nothing will be discarded. If desired, any black bars (unused pixels) could then

be cropped off using the cropping control. Although disabling the letterbox control also fills the defined

presentation area, any extra data beyond this area-whether top-and-bottom or left-and- right-will be discarded.

NOTE: Keep Letter box checked for all cinema presentations.

Admin: Gamut Menu

The primary function of the color Gamut menu is to ensure that the projector can achieve any specific known

and pre-defined industry color performance standard-called a

target color-within its current environment, and

within a desired tolerance. In this menu you can record measurements for currently projected uncorrected

colors, modify or create custom

Target Color Gamut Data (TCGD) files for new color gamut performance, and

set how closely you want to match the target white.

Recording the projector's uncorrected color performance is typically completed as a final step-like a

calibration-after installation. For this one-time procedure, the installer measures initial native (i.e.,

uncorrected) colors at the screen, enters the data as

Measured Color Gamut Data on the left side of the

Gamut menu, and typically saves an MCGD file called OnSite. By default, the projector will use this MCGD

to calculate-and implement-precise processing modifications needed to achieve any

target color gamut on

screen, essentially compensating for the type of port window, screen, lens, light output, ambient light and other

current environmental factors influencing on-screen colors. These various industry standards for color

performance (TCGDs) will then be consistently achieved from source-to-source and from site-to-site. If the

environment degrades or changes (such as if an auxiliary lens is swapped on and off), or if an internal optical

module is replaced, create one or more new MCGDs, naming them as desired. To use an MCGD file as the

reference file for target color processing (such as with a certain source and/or lens), select it in the

Custom

menu.

Figure 3-29 Letter Box vs. Non-Letter Box

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Christie CP2000-M User Manual Page 87