Displaying Both Flat And Scope - Christie CP2000-XB Setup Manual

Section 2: Installation & Setup
Although image size and aspect ratio can be adjusted using projector controls, it is still ideal to use a screen
with an aspect ratio that closely matches your likely source material. You can then more easily fill the screen
with the image without restricting either image size or content. For example, standard video from a VCR has a
4:3 ratio (approximately) and can fill a 4:3 screen without side-to-side stretching, whereas a high-definition
signal with a 16:9 aspect ratio is largest on a 16:9 screen.
As shown in Figure 2-9, an obvious mismatch between source material and screen is characterized by black
bars on both sides of the image (if the screen is wider than the source material) or above and below the image
(if the source material is wider—typically called a letter box display). The black bars are unused display pixels
and, in many installations such as theatres, are masked or hidden behind panels or curtains. Alternatively, if the
area of unused pixels is considered minimal, you may prefer to use the projector's software control to slightly
stretch the image either horizontally or vertically—enough to utilize the remaining pixels while not noticeably
distorting the image.

Displaying Both Flat and Scope

As an example, two standard types of displays common in theatres—flat and scope—differ in their width-to-
height aspect ratio as shown below:
Achieving either of these displays from a variety of incoming source material (that may or may not be in a
format matching that of the screen) depends on lenses, proper settings in the projector, and certain room
conditions. Refer to Section 4: Cinema Operation of the CP2000-XB User Manual (020-100163-xx).
2-6
Figure 2-9 Aspect Ratios: Images vs. Screens
Figure 2-10 Typical Wide Formats
CP2000-XB Setup Guide
020-100250-02 Rev. 1 (06-2009)