Optoma Optoma EP725 - Manual (Page 18)

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User Controls
All Images
Brightness
Adjusting the brightness of the image.
4 Press the to darken image.
4 Press the to lighten the image.
Contrast
The contrast controls the degree of difference between the lightest
and darkest parts of the picture. Adjusting the contrast changes
the amount of black and white in the image.
4 Press the to decrease the contrast.
4 Press the to increase the contrast.
Color Temperature
Adjust the color temperature. With the higher temperature, the
screen looks colder; with the lower temperature, the screen looks
warmer.
Keystone Correction
Adjust image distortion caused by tilting projection. (±16 degrees)
Zoom
4 Press the to reduce the zoomed image.
4 Press the to magnify an image of the projection screen.
Aspect Ratio
You can use this function to fit your desired aspect ratio type.
Computer / Video mode