ViewSonic PX725HD User Guide - Page 30

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 signal. To change the projected image ratio (no matter what aspect the source is): 1. Open the OSD menu and go to the DISPLAY > Aspect Ratio menu. 2. Press / to select an aspect ratio to suit the format of the video signal and your display requirements. 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. 1. Auto: Scales an image proportionally to fit the projector's native resolution in its horizontal width. This is suitable for the incoming image which is neither in 4:3 nor 16:9 and you want to 16:10 picture make most use of the screen without altering the image's aspect ratio. 15:9 picture 2. 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 aspect 4:3 picture DVD movies, as it displays them without aspect alteration. 3. 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. 16:9 picture 4. Panorama: Scales a 4:3 image vertically and horizontally in a non-linear manner so that it fills the screen. 4:3 picture 5. 2.35:1: Scales an image so that it is displayed in the center of the screen with a 2.35:1 aspect ratio without aspect alteration. 2.35:1 picture 25