NEC iS15-2K, User Manual

Page: 23 / 90

page 2.7
iS15-2K
Cinema Projector: User Manual 2. Installation
Notes
If the mix of images to be
displayed includes images of
varying aspect ratio, then you
should base your choice of lens
on the
widest image that is to
be projected.
The lenses available and their
part numbers are listed below:
1.45 - 1.8: 1 zoom lens 102-933
1.8 - 2.4: 1 zoom lens 102-934
(note: these two lenses overlap)
2.2 - 3.0: 1 zoom lens 102-935
3.0 - 4.3: 1 zoom lens 102-936
Lens charts
Native resolution 2048x1080 , no anamorphic lens
Use the chart below to choose which lens best suits your application.
example
• For a screen width of 15m at a distance of 25m, the 1.45 - 1.8: 1 lens would be
best suited.
• For the same screen size at a distance of 32m, the 1.8 - 2.4: 1 lens would be
best suited.
if you need to be more precise, then use the calculations on the page immediately
following the lens charts.
feet metres feet metres
10 15 20 25 30 35 40 45 metres
33 49 66 82 98 115 131 148 feet
Throw distance
52 16 98 30
43 13 82 25
35 10 66 20
26 8 49 15
17 5 33 10
8 3 16 5
TRF (see page 15) = 1
Screen height Screen wid
th