Panasonic PT-MW630 Operating Instructions Manual page 47

Formula for calculating the projection distance per projection lens
To use a projected image size not listed in this manual, check the projected image size SD (m) and use the
respective formula to calculate projection distance.
All the units for the formula are m. (Value obtained by the following calculation formula contains a slight error.)
When calculating a projection distance using image size designation (value in inches), multiply the value in inches
by 0.0254 and substitute it into SD in the formula for calculating the projection distance.
PT‑MZ670, PT‑MZ570
r Zoom Lens
Projection lens Model No.
Standard zoom lens/ET-ELS20
ET-ELW22
ET-ELW20
ET-ELT20
ET-ELT21
r Fixed-focus Lens (Model No.: ET-ELW21)
Projection lens Model No.
ET-ELW21
PT‑MW630, PT‑MW530
r Zoom Lens
Projection lens Model No.
Standard zoom lens/ET-ELS20
ET-ELW22
ET-ELW20
ET-ELT20
ET-ELT21
Chapter 2 Getting Started — Setting up
Throw ratio Aspect ratio
1.6 - 2.8:1 16:10
1.6 - 2.8:1 16:9
1.9 - 3.3:1 4:3
0.8 - 1.0:1 16:10
0.8 - 1.0:1 16:9
0.9 - 1.2:1 4:3
1.2 - 1.7:1 16:10
1.2 - 1.7:1 16:9
1.5 - 2.0:1 4:3
2.7 - 4.5:1 16:10
2.7 - 4.5:1 16:9
3.3 - 5.4:1 4:3
4.4 - 7.1:1 16:10
4.4 - 7.1:1 16:9
5.3 - 8.6:1 4:3
Throw ratio Aspect ratio
0.8:1 16:10
0.8:1 16:9
0.9:1 4:3
Throw ratio Aspect ratio
1.6 - 2.8:1 16:10
1.6 - 2.8:1 16:9
2.0 - 3.4:1 4:3
0.8 - 1.0:1 16:10
0.8 - 1.0:1 16:9
1.0 - 1.2:1 4:3
1.2 - 1.7:1 16:10
1.2 - 1.7:1 16:9
1.5 - 2.0:1 4:3
2.8 - 4.5:1 16:10
2.8 - 4.5:1 16:9
3.3 - 5.5:1 4:3
4.5 - 7.2:1 16:10
4.5 - 7.2:1 16:9
5.4 - 8.7:1 4:3
Projection distance (L) formula
Min. (LW)
= 1.389961 x SD - 0.054882
= 1.428602 x SD - 0.054882
= 1.573583 x SD - 0.054882
= 0.690394 x SD - 0.048460
= 0.709587 x SD - 0.048460
= 0.781595 x SD - 0.048460
= 1.055748 x SD - 0.055497
= 1.085098 x SD - 0.055497
= 1.195197 x SD - 0.055497
= 2.366220 x SD - 0.114022
= 2.432001 x SD - 0.114022
= 1.195197 x SD - 0.055497
= 3.866693 x SD - 0.212284
= 3.974187 x SD - 0.212284
= 4.377480 x SD - 0.212284
Projection distance (L) formula
= 0.676299 x SD - 0.057678
= 0.695100 x SD - 0.057678
= 0.765630 x SD - 0.057678
Projection distance (L) formula
Min. (LW)
= 1.406181 x SD - 0.050400
= 1.445236 x SD - 0.050400
= 1.591906 x SD - 0.050400
= 0.693071 x SD - 0.048417
= 0.712338 x SD - 0.048417
= 0.784610 x SD - 0.048417
= 1.070236 x SD - 0.055400
= 1.099996 x SD - 0.055400
= 1.211591 x SD - 0.055400
= 2.395157 x SD - 0.113900
= 2.461732 x SD - 0.113900
= 2.711504 x SD - 0.113900
= 3.913819 x SD - 0.212700
= 4.022638 x SD - 0.212700
= 4.430747 x SD - 0.212700
Max. (LT)
= 2.363976 x SD - 0.048228
= 2.429695 x SD - 0.048228
= 2.676260 x SD - 0.048228
= 0.855787 x SD - 0.045477
= 0.879578 x SD - 0.045477
= 0.968837 x SD - 0.045477
= 1.437441 x SD - 0.053400
= 1.477402 x SD - 0.053400
= 1.627323 x SD - 0.053400
= 3.858307 x SD - 0.112874
= 3.965568 x SD - 0.112874
= 1.627323 x SD - 0.053400
= 6.141575 x SD - 0.210772
= 6.312311 x SD - 0.210772
= 6.952874 x SD - 0.210772
Max. (LT)
= 2.394370 x SD - 0.049700
= 2.460945 x SD - 0.049700
= 2.710613 x SD - 0.049700
= 0.859134 x SD - 0.045448
= 0.883018 x SD - 0.045448
= 0.972607 x SD - 0.045448
= 1.453031 x SD - 0.053400
= 1.493425 x SD - 0.053400
= 1.644945 x SD - 0.053400
= 3.904055 x SD - 0.112800
= 4.012598 x SD - 0.112800
= 4.419694 x SD - 0.112800
= 6.215236 x SD - 0.210700
= 6.388031 x SD - 0.210700
= 7.036131 x SD - 0.210700
ENGLISH - 47