About the aspect ratio
In the pictures below, the black portions are inactive areas and the white portions are active areas. OSD menus can be displayed on those unused black areas.
English
1.Auto:
Scales an image proportionally to fit the projector’s native resolution in its horizontal width and vertical height. This is suitable for the incoming image which is in 4:3 or 16:9 and you want to make most use of the screen without altering the image’s aspect ratio.
4:3 picture
16:9 picture
2.16:9:
Scales an image so that it is displayed in the center of the screen with a 16:9 aspect ratio. This is most suitable for images which are already in a 16:9 aspect, like high definition TV, as it displays them without aspect alteration.
3.4:3:
Scales an image so that it is displayed in the center of the screen with a 4:3 aspect ratio. This is most suitable for 4:3 images like computer monitors, standard definition TV and 4:3 images aspect DVD movies, as it displays them without aspect alteration.
4.Letter Box:
Scales an image so that the original aspect ratio of the production is preserved. For input signals that do not conform to the projector's native resolution, the full unaltered image is displayed with a black border where no image exists.
16:9 picture
4:3 picture
16:9 picture
Letter Box format picture
Operation 33