28SETTING UP THE PROJECTORSetting Up the ProjectorDetermining the Distance to the ScreenThe projected image size is determined by the distance between the projector lens and thescreen. Select the place where the desired image size is obtained according to the illustra-tion shown below.H1 and H2: The height of the screen from the intersection of optical axis and screen surface when animage is projected at right angle to the screen.z Install the projector at the position where the projection distance is between approxi-mately 1.2 m (3.9') to 9 m (29.5'). If the installation position is too close or too far, theimage is out of focus or the screen becomes dark, respectively.z The sizes in the above table have been obtained assuming that the aspect ratio is 4:3.They may vary from the actual sizes depending on the type of the projected image.Screen size(W x H) cm40"81 x 6160"122 x 9180"163 x 122100"203 x 152150"305 x 229182"370 x 277200"406 x 305250"508 x 381300"610 x 457ProjectiondistanceZoom(max)1.2 m(3.9')1.8 m(5.9')2.4 m(7.9')3.0 m(9.8')4.5 m(14.8')5.4 m(17.7')5.9 m(19.4')7.4 m(24.2')8.9 m(29.2')Zoom(min)2.0 m(6.6')2.9 m(9.6')3.9 m(12.9')4.9 m(16.1')7.4 m(24.2')9.0 m(29.5') – – –H1 55 cm(1.8')82 cm(2.7')110 cm(3.6')137 cm(4.5')206 cm(6.8')250 cm(8.2')274 cm(9.0')343 cm(11.3')411 cm(13.5')H2 6 cm(0.2')9 cm(0.3')12 cm(0.4')15 cm(0.5')23 cm(0.8')28 cm(0.9')30 cm(1.0')38 cm(1.2')46 cm(1.5')z For the relationship between the screen size and projection distance, see the table on page119.z You can also adjust the image size with the zoom function (P37).Optical axis when image is projectedat right angle to the screen. ScreenH1:H2=9:18.9 m (29.2')5.9 m (19.4')4.5 m (14.8')2.4 m (7.9')1.2 m (3.9')40"80"48"150"90"200"120"300"182"H1H2Zoom (max.)Zoom (min.)
