Projection Distance And Lens Shift Range - Sony VPL-GTZ280 Operating Instructions Manual

Projection Distance and
Lens Shift Range
The projection distance refers to the distance between the
front of the lens and the projected surface.
Projection distance L
Projected image
The lens shift range represents the distance in percent (%)
by which the lens can be shifted from the center of the
projected image. The lens shift range is regarded as 0%
when the point A in the illustration (point where a line
drawn from the center of the lens and the projected image
cross at right angles) is aligned with the center of the
projected image and full width or full height of the
projected image is regarded as 100%.
Projected image
Center of the
50%
projected image
50%
A
Projected image
Center of the
50%
projected image
50%
A
VS +
HS – HS +
VS –
Projected image
Shaded region: Lens shift range
VS +:Vertical lens shift range (up) [%]
VS –:Vertical lens shift range (down) [%]
HS +:Horizontal lens shift range (right) [%]
HS –:Horizontal lens shift range (left) [%]
Front of the lens
Lens shift range
Center of the lens
Side of the unit
Lens shift range
Center of the lens
Top of the unit
Center of the lens
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