Panasonic manual 31

Setting up

If the projector is used with a screen size not listed in this manual, check the diagonal dimension (m) of your screen and calculation the projection distance using the following formula.

JJCalculation formulas for projection distance by lens types (for EZ570 series)

Lens type		Aspect ratio	Projection distance (L) formula
		16:10	Min. (LW) L= 0.138996 x SD(m) - 0.054882
			Max. (LT) L= 0.236398 x SD(m) - 0.048228
The standard zoom		16:9	Min. (LW) L= 0.14286 x SD(m) - 0.054882
lens			Max. (LT) L= 0.242969 x SD(m) - 0.048228
		4:3	Min. (LW) L= 0.157357 x SD(m) - 0.054882
			Max. (LT) L= 0.267626 x SD(m) - 0.048228
		16:10	L= 0.06763 x SD(m) - 0.057678
Fixed-focus Lens	ET-ELW21	16:9	L= 0.06951 x SD(m) - 0.057678
		4:3	L= 0.076564 x SD(m) - 0.057678
				Started
		16:10	Min. (LW) L= 0.105575 x SD(m) - 0.055497
			Max. (LT) L= 0.143744 x SD(m) - 0.053400
Short Zoom Lens	ET-ELW20	16:9	Min. (LW) L= 0.10851 x SD(m) - 0.055497	Getting
			Max. (LT) L= 0.14774 x SD(m) - 0.053400
		4:3
			Min. (LW) L= 0.119521 x SD(m) - 0.055497
			Max. (LT) L= 0.162733 x SD(m) - 0.053400
		16:10	Min. (LW) L= 0.236622 x SD(m) - 0.114022
			Max. (LT) L= 0.385831 x SD(m) - 0.112874
Long Zoom Lens	ET-ELT20	16:9	Min. (LW) L= 0.2432 x SD(m) - 0.114022
			Max. (LT) L= 0.396557 x SD(m) - 0.112874
		4:3	Min. (LW) L= 0.26788 x SD(m) - 0.114022
			Max. (LT) L= 0.436799 x SD(m) - 0.112874
		16:10	Min. (LW) L= 0.386669 x SD(m) - 0.212284
			Max. (LT) L= 0.614157 x SD(m) - 0.210772
Ultra Long Zoom Lens	ET-ELT21	16:9	Min. (LW) L= 0.397419 x SD(m) - 0.212284
			Max. (LT) L= 0.631231 x SD(m) - 0.210772
		4:3	Min. (LW) L= 0.437748 x SD(m) - 0.212284
			Max. (LT) L= 0.695288 x SD(m) - 0.210772

ENGLISH - 31