Benq MX819ST Manuel Du Propriétaire

Positioning your projector

15

Obtaining a preferred projected image size

The distance from the projector lens to the screen, the zoom setting, and the video format 

each factors in the projected image size.

Projection dimensions 

Refer to 

 for the center of lens dimensions of this projector before 

calculating the appropriate position.

MX818ST/MX819ST

The screen aspect ratio is 4:3 and the projected picture is 4:3

For example, if you are using an 120-inch screen, the recommended projection distance is 

1481 mm and the vertical offset is 274 mm.

If your measured projection distance is 2.5 m (2500 mm), the closest match in the 

 column is 2469 mm. Looking across this row shows that a 200'' 

(about 5.1 m) screen is required.

(a)

(b)

Center of lens

Screen

(c)

(a) Screen size

(b) Distance from screen

(mm)

(c) Vertical offset

(mm)

Diagonal

Height

(mm)

Width

(mm)

Inches

mm

80

2032

1219

1626

988

183

100

2540

1524

2032

1235

229

120

3048

1829

2438

1481

274

150

3810

2286

3048

1852

343

180

4572

2743

3658

2222

411

200

5080

3048

4064

2469

457

220

5588

3353

4470

2716

503

240

6096

3658

4877

2963

549

270

6858

4115

5486

3333

617

300

7620

4572

6096

3704

686