Chapter 2
Getting Started — Setting up
ENGLISH - 45
For PT-DW830E
Lens type
Projection lens Model
No.
Aspect ratio
Projection distance (L) formula
Standard zoom lens
—
16:10
Min. (LW)
L = 1.5651 x SD - 0.0746
Max. (LT)
L = 2.1855 x SD - 0.0725
16:9
Min. (LW)
L = 1.6086 x SD - 0.0746
Max. (LT)
L = 2.2462 x SD - 0.0725
4:3
Min. (LW)
L = 1.7715 x SD - 0.0746
Max. (LT)
L = 2.4736 x SD - 0.0725
Fixed-focus lens
ET-DLE055
16:10
—
L = 0.7237 x SD - 0.0476
16:9
—
L = 0.7438 x SD - 0.0476
4:3
—
L = 0.8191 x SD - 0.0476
Ultra short focus zoom lens
ET-DLE085
16:10
Min. (LW)
L = 0.7209 x SD - 0.0471
Max. (LT)
L = 0.8923 x SD - 0.0442
16:9
Min. (LW)
L = 0.7409 x SD - 0.0471
Max. (LT)
L = 0.9171 x SD - 0.0442
4:3
Min. (LW)
L = 0.8159 x SD - 0.0471
Max. (LT)
L = 1.0100 x SD - 0.0442
Short focus zoom lens
ET-DLE150
16:10
Min. (LW)
L = 1.1822 x SD - 0.0540
Max. (LT)
L = 1.7055 x SD - 0.0498
16:9
Min. (LW)
L = 1.2151 x SD - 0.0540
Max. (LT)
L = 1.7529 x SD - 0.0498
4:3
Min. (LW)
L = 1.3381 x SD - 0.0540
Max. (LT)
L = 1.9304 x SD - 0.0498
Intermediate focus zoom lens
ET-DLE250
16:10
Min. (LW)
L = 2.0649 x SD - 0.0800
Max. (LT)
L = 3.2612 x SD - 0.0792
16:9
Min. (LW)
L = 2.1223 x SD - 0.0800
Max. (LT)
L = 3.3519 x SD - 0.0792
4:3
Min. (LW)
L = 2.3371 x SD - 0.0800
Max. (LT)
L = 3.6912 x SD - 0.0792
Long focus zoom lens
ET-DLE350
16:10
Min. (LW)
L = 3.2550 x SD - 0.1351
Max. (LT)
L = 4.9185 x SD - 0.1346
16:9
Min. (LW)
L = 3.3455 x SD - 0.1351
Max. (LT)
L = 5.0553 x SD - 0.1346
4:3
Min. (LW)
L = 3.6842 x SD - 0.1351
Max. (LT)
L = 5.5671 x SD - 0.1346
Ultra long focus zoom lens
ET-DLE450
16:10
Min. (LW)
L = 4.9277 x SD - 0.3017
Max. (LT)
L = 7.7903 x SD - 0.2991
16:9
Min. (LW)
L = 5.0647 x SD - 0.3017
Max. (LT)
L = 8.0069 x SD - 0.2991
4:3
Min. (LW)
L = 5.5775 x SD - 0.3017
Max. (LT)
L = 8.8174 x SD - 0.2991
