Panasonic PT-D4000U manual Calculation formulas for projection distance by lens types

Calculation formulas for projection distance by lens types

(L, LW, LT : m SD : inch)

Lens type		Aspect ratio	Projection distance (L) formula
Standard		4:3	Minimum (LW)	L=0.0371 x SD-0.0507
			Maximum (LT)	L=0.0490 x SD-0.0500
zoom lens		16:9	Minimum (LW)	L=1.8270 x SD-0.0507
			Maximum (LT)	L=2.4110 x SD-0.0500
Wide-angle fixed-	Model No. :	4:3
				L=0.0166 x SD-0.0361
focus lens	ET-DLE050	16:9	Minimum (LW)	L=0.0181 x SD-0.0361
Wide-angle	Model No. :	4:3		L=0.0276 x SD-0.0452
			Maximum (LT)	L=0.0372 x SD-0.0478
zoom lens	ET-DLE100	16:9	Minimum (LW)	L=0.0301 x SD-0.0452
			Maximum (LT)	L=0.0405 x SD-0.0478
Intermediate-focus	Model No. :	4:3	Minimum (LW)	L=0.0504 x SD-0.0657
			Maximum (LT)	L=0.0824 x SD-0.0758
zoom lens	ET-DLE200	16:9	Minimum (LW)	L=0.0549 x SD-0.0657
			Maximum (LT)	L=0.0898 x SD-0.0758
Long-focus	Model No. :	4:3	Minimum (LW)	L=0.0795 x SD-0.1380
			Maximum (LT)	L=0.1232 x SD-0.1310
zoom lens	ET-DLE300	16:9	Minimum (LW)	L=0.0866 x SD-0.1380
			Maximum (LT)	L=0.1342 x SD-0.1310
Ultra-long-focus	Model No. :	4:3	Minimum (LW)	L=0.1176 x SD+0.0244
			Maximum (LT)	L=0.1646 x SD+0.0651
zoom lens	ET-DLE400	16:9	Minimum (LW)	L=0.1281 x SD+0.0244
			Maximum (LT)	L=0.1793 x SD+0.0651

Note • The dimensions in the table in pages 17, 18 and the values obtained from the above formulas may contain slight errors.

•When an SXGA signal is input and projected, the right and left ends of the picture will be blanked and the aspect ratio will be 5:4.

•The brightness is different between the wide lens position settings and telephoto lens position settings.

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