Samsung SP-D400 Owner's Instructions Manual page 18

You can adjust the size of image within zoom range by manipulating the
Zoom Knob.
Focus the picture on the screen using the Focus Ring.
If your product is installed at a location out of the specified projection
distance (refer to
be adjusted correctly.
Leveling with Adjustable Feet
For level placing of the projector, adjust the Adjustable Feet of the projector.
You may adjust the level of the projector up to 12 mm (average 3.4°) degrees.
Depending on the position of the projector, Keystone distortion of image may appear.
Screen Size and Projection Distance
Install the projector on a flat, even surface and level the projector using the adjustable feet to realize optimal picture quality. If
images are not clear, adjust them using the Zoom Knob or Focus Ring, or move the projector forward and backward.
Horizental
Screen size
(M:inch)
(X:mm)
40 812.8
50 1016.0
60 1219.2
70 1422.4
80 1625.6
90 1828.8
100 2032.0
110 2235.2
120 2438.4
130 2641.6
140 2844.8
150 3048.0
160 3251.2
170 3454.4
180 3657.6
190 3860.8
200 4064.0
210 4267.2
220 4470.4
230 4673.6
240 4876.8
250 5080.0
Screen Size and Projection Distance), the focus cannot
Vertical
(Y:mm)
609.6
762.0
914.4
1066.8
1219.2
1371.6
1524.0
1676.4
1828.8
1981.2
2133.6
2286.0
2438.4
2590.8
2743.2
2895.6
3048.0
3200.4
3352.8
3505.2
3657.6
3810.0
Max Min
(Z:mm) (Z:mm)
1730 1480
2150 1840
2580 2210
3010 2570
3430 2940
3860 3300
4290 3670
4710 4040
5140 4400
5560 4770
5990 5130
6420 5500
6840 5860
7270 6230
7700 6600
8120 6960
8550 7330
8980 7690
9400 8060
9830 8420
10260 8790
10680 9160
Offset
(Y':mm)
76
95
114
133
152
171
191
210
229
248
267
286
305
324
343
362
381
400
419
438
457
476