Optoma H27 User Manual - Page 16

English User Controls Contrast 4 Control the degree of difference between the lightest and darkest parts of the picture. Keystone +/- 4 Correct image distortion caused by tilting the projector. 4 : 3 4 Scale the image at a 4:3 aspect ratio. 16 : 9 4 Scale the image at a 16:9 aspect ratio. 1:1 4 The input source will be displayed without scaling. Letterbox 4 Enable the viewing of the letterboxed non-anamorphically enhanced movie at full screen width. Part of the original image will be lost if the image aspect ratio is less than 1.78:1. Image shift +/- 4 Shifts the projected image position vertically. Four Directional Select Keys 4 Press "Menu", then use to select menu items or to make adjustments to your selection. Enter 4 Confirm your selection. Menu/Exit 4 Display or exits the on-screen display menu. VGA 4 Press "VGA" to change source to VGA/YPbPr/SCART connector. DVI-D 4 Press "DVI-D" to change source to DVI-D connector. Composite 4 Press "Composite" to change source to Composite Video source. S-Video 4 Press "S-Video" to change source to S-Video source. Component 4 Press "Component" to change source to component connector. 16