Sim2 Crystal - Manual (Page 30)

30 Using the projector
Selecting the aspect ratio
The "aspect ratio" is the ratio of the image width to the image height. Digital TV is usually
in 16:9 ratio, which is the default for this projector, and most analog TV signals and DVDs
are in 4:3 ratio.
With the advent of digital signal processing, digital display devices like this projector can
dynamically stretch and scale the image output to a different aspect than that of the
image input source. Images can be stretched in a linear manner so the whole of the
image is stretched equally, or non-linearly, which distorts the image.
To change the projected picture ratio (no matter what aspect
the source is):
• Using the remote control
Press one of the aspect ratio keys to suit the format of the
video signal and your display requirements.
• Using the OSD menu
1. Press MENU and then press / until the Display menu is
highlighted.
2. Press to highlight Aspect Ratio.
3. Press / to select an aspect ratio to suit the format of
the video signal and your display requirements.
About the aspect ratio
1. Anamorphic (ANA): Scales an image so that it is displayed
in the center of the screen with a 16:9 aspect ratio. This
setting stretches and resizes linearly, except that it treats the
vertical and horizontal dimensions independently. It
stretches the height of the source image until it reaches the
full projected height, and stretches the width of the source
image until it reaches the full projected width. This may alter
the projected aspect, depending upon the original aspect
of the source image. Anamorphic is most suitable for
images which are already in a 16:9 aspect, like high definition TV, as it displays them
without aspect alteration.
2. 4:3: Scales a picture so that it is displayed in the center of
the screen with a 4:3 aspect ratio. This is most suitable for 4:3
pictures like computer monitors, standard definition TV and
4:3 aspect DVD movies, as it displays them without aspect
alteration.
3. Letter Box (LB): Scales a picture to fit the projector’s native
resolution in its horizontal width and resize the picture’s
height to the 3/4 of the projection width. This may produce
a picture greater in height than can be displayed, so part
of the picture is lost (not displayed) along the top and
bottom edges of the projection. This is suitable for the
display of movies which are presented in letter box format
(with black bars on the top and bottom).
Aspect Ratio
Keystone
Position
Overscan Adjustment
PIP
PC & Component YPbPr Tuning
Display
EXIT Back
0
S-Video
Anamorphic
Color System
16:9 picture
4:3 picture
16:9 picture
Letter Box
format picture