Panasonic PT-D12000U Operating Instructions Manual page 21

Projected range using geometric adjustment
VERTICAL KEYSTONE
α
Screen
VERTICAL ARC
L2
Screen
Center of the
circle
Screen
L3 : Projection distance
R3
R3 : Radius of the circle
Keystone correction only
Vertical
Lens
Keystone
Correction
Angle α( ° )
ET-D75LE1 ±40
ET-D75LE2 ±40
±40
ET-D75LE3
ET-D75LE4 ±40
ET-D75LE5 ±22
±28
ET-D75LE6
ET-D75LE8 ±40
Note
• When using geometric adjustment, if the amount of compensation is too great, excessive blurring may result.
• The curved screens illustrated are simply sections of a full circle.
Side View
Side View
L2 : Projection distance
R2 : Radius of the circle
R2
Side View
L3
When using arc and keystone correction together
Horizontal Vertical
Keystone Keystone
Correction Correction
Angle β( ° ) Angle α( ° )
±15 ±5
±15 ±5
±15 ±10
±15 ±10
±15 ±5
±10 ±5
±15 ±10
HORIZONTAL KEYSTONE
β
Screen
HORIZONTAL ARC
Screen
Center of the
circle
Screen
R3
Horizontal
R2/L2
Keystone
minimum
Correction
value
Angle β( ° )
±5 1.6
±5 1.2
±10
0.8
±15 0.6
±5 3.0
±5
2.4
±15 0.4
Top View
Top View
L2
L2 : Projection distance
R2 : Radius of the circle
R2
Top View
L3
L3 : Projection distance
R3 : Radius of the circle
Arc correction only
R3/L3 R2/L2
minimum minimum
value value
3.2 0.8
2.4 0.6
1.6 0.4
1.0 0.3
6.0 1.5
4.8 1.2
0.8 0.2
ENGLISH – 21
R3/L3
minimum
value
1.6
1.2
0.8
0.5
3.0
2.4
0.4