I have an installation where the projector is installed above the top of the screen. How do I ensure that the vertical keystone correction will correct the image?
To Calculate actual Vertical offset within vertical keystone spec tan-1(The difference between height of the top of screen and the height of the projector divided by the distance from screen to projector) Example: Top of screen= 79″ PJ height is = 96″ 96″-79″ = 17″ Difference is 17″ Distance from screen to PJ( which is given by the image size and throw distance chart) = 135″ tan-1 (17/135) = 7.2 degrees Correctable with vertical keystone adjustment ( Vertical Keystone correction is 15 degrees max) • page top
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