Knoll Systems HD225 user manual letterboxed, the image is expanded to fill the screen

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4:3: resizes the image from its original version to fit a standard 4:3 aspect ratio screen. If you have a 4:3 source on a 16:9 screen, the image is placed in a 16:9 space, so black bars appear at the sides of the image.

Letterbox text: preserves the 16:9 aspect ratio and maximizes readability of the text.

Letterbox: preserves the 16:9 aspect ratio. If you have a 16:9 source and screen, the image fills the screen. If your source is

letterboxed, the image is expanded to fill the screen.

Natural Wide: this mode stretches a 4:3 image to fill the entire 16:9 screen. The center two-thirds of the image is unchanged; the edges of the image are stretched.

Presets: You can customize the settings for each source and save them as a preset. There are three user-definable presets. To set a preset for the current source, adjust the image; then choose Save User 1, 2, or 3. You can recall these settings in the future by selecting the appropriate user presets.

Gamma: Gamma tables contain preset intensity configurations optimized for the input source. You can select a gamma table that has been specifically tuned for film, presentation, or photography.

NOTE: Your viewing preferences may vary. Cycle through the gamma options and pick the one you like the best.