Bedienungsanleitung BenQ W7500 (Seite 33 von 60) (Englisch)

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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.

The function is not available when the 3D Mode is set to 2D 3D Conversion.

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).

4. Wide: Stretches the picture horizontally in a non-linear manner, that

is, the edges of the picture are stretched more than the center of the

picture to prevent distortion of the central part of the picture. This is

suitable for occasions where you want to stretch the width of a 4:3

aspect picture to the width of a 16:9 aspect screen. It does not alter the

height. Some widescreen movies have been produced with their width

squashed down to the width of a 4:3 aspect, and are best viewed when

restretched back to their original width using this setting.

16:9 picture

4:3 picture

16:9 picture

Letter Box

format picture

4:3 picture

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BenQ W7500 Seite 33

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