InFocus IN70 SERIES manual Choosing the aspect ratio, letterbox aspect ratio

Choosing the aspect ratio

Aspect ratio is the ratio of the image width to image height. HDTV and most DVDs are 16:9, which is the default for this projector. When in 4:3 mode the projector places black bars on both sides of the image. Native mode centers the image and turns off the internal scaler so that any resolu- tion larger than the native projector resolution is cropped on the edges. Let- terbox expands the image to fill the screen.

What you plan to project will also help you choose between 4:3 and 16:9. For example, most TV shows are 4:3, while most movies are 16:9. If you have a 16:9 screen, then you should select an aspect ratio of 16:9 for anamorphic movies and HDTV, and Native for 4:3 content. If you have a 4:3 screen you should still use 16:9 for anamorphic movies or HDTV, but you also have the option of using 4:3, Native, or Natural Wide for 4:3 content. Keep in mind that anamorphic movies only appear correctly if the DVD player is set to output to a 16:9 television. Natural Wide 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.

16:9

aspect ratio

4:3 aspect ratio

letterbox aspect ratio

natural wide aspect ratio

16:9 image input

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16

4:3 image input

3

4

letterbox image input

black bars

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black bars

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4:3 image input

3

4

16:9 image

9

16

4:3 image on 16:9 screen

9	bars	bars
	black	black
		16

16:9 image fills 16:9 screen

9

16

4:3 image fills 16:9 screen

9

16

6