Epson EMP 800, Installation Manual

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2-1-4.When using the wide conversion lens (ELPCW01)
The wide conversion lens can be used by fitting it to the standard lens.
The projection distance when this lens is used is shorter than when the standard lens is used.
We recommend that the projection distance between the projector and the screen is set to 0.9 m to
12.6m at installation. The following table shows the guidelines to adjust to the correct distance.
* If a screen size other than those shown above is used, determine the correct distance between
the projector and the screen according to the following expression.
Maximum screen size(cm)=0.795 X Projector to screen(cm) + 6.670
Minmun screen size(cm)=0.600 X Projector to screen(cm) + 4.437
Maximun Projector to screen(cm) =1.666 X screen size(cm) - 1.145
Minmun Projector to screen(cm) =1.258 X screen size(cm) - 1.300
Scrrin size (cm)
Approximate Projector Distace (m)
EMP-7350/7250/5350
300inch(610x457) 9.5-12.6
200inch(416x305) 6.3-8.4
100inch(203x152) 3.1-4.2
80inch(163x122) 2.5-3.3
60inch(122x91) 1.9-2.5
40inch(81x61) 1.2-1.6
30inch(61x41) 0.9-1.1
23inch(47x35) 0.9