Optoma DLP User Manual page 30

USING THE PROJECTOR
Brightness Mode
Adjust the brightness mode settings.
‡ Eco: Choose "Eco" to dim the projector lamp which will lower power consumption and extend the lamp
life.
‡ Bright: Choose "Bright" to increase the brightness.
Digital Zoom
Use to reduce or magnify an image on the projection screen.
Aspect ratio
Select the aspect ratio of the displayed image.
‡ 4e:3: This format is for 4:3 input sources.
‡ 16e:9: This format is for 16:9 input sources, like HDTV and DVD enhanced for Wide screen TV.
‡ Native: This format displays the original image without any scaling.
‡ Auto: Automatically selects the appropriate display format.
Notee:
‡ It is considered normal that black bars appear around the image with a resolution of 4K in each aspect
mode.
‡ The black bars and border will change in size depending on the aspect ratio.
4K UHD scaling table:
16 e: 9 screen
4x3
16x9
Native mode
Auto
30 English
Black bars
4K active area
4K 3840x2160 pixels
480i/p 576i/p
Scale to 2880 x 2160.
Scale to 3840 x 2160.
1:1 mapping centered.
No scaling will be made; the displayed resolution depends on input source.
-If source is 4:3, the screen type will be scaled to 2880 x 2160.
-If source is 16:9, the screen type will be scaled to 3840 x 2160.
-If source is 16:10, the screen type will be scaled to 3456 x 2160.
720p 1080i/p 2160p