page 45
Digital Projection INSIGHT 4K Dual LED & Quad Series
Reference Guide
CHOOSING A LENS
Rev B June 2016
Choosing A Lens
A number of lenses are available. Which lens you choose depends on the screen size, image aspect ratio, throw distance and light output.
The following table shows all available lenses in order of their
throw ratios
:
Throw ratios
Lens extension (±2%)
Throw distance range
0.93 : 1 fixed lens
272 mm (10.7 in)
0.5 m - 40 m (1.6 ft - 130 ft)
1.13 - 1.72 : 1 zoom lens 240 mm (9.4 in)
2.5 m - 40+ m (8.2 ft - 130+ ft) at 1.13:1
0.5 m - 40+ m (1.6 ft - 130+ ft) at 1.72:1
1.65 - 2.60 : 1 zoom lens 210 mm (8.3 in)
3.5 m - 40+ m (11.5 ft - 130+ ft) at 1.65:1
1.0 m - 40+ m (3.3 ft - 130+ ft) at 2.60:1
2.53 - 4.98 : 1 zoom lens 210 mm (8.3 in)
1.5 m - 40+ m (4.9 ft - 130+ ft) at 2.53:1
4.5 m - 40+ m (14.8 ft - 130+ ft) at 4.98:1
To choose a lens, either calculate the
throw ratio
required, or use the
lens charts
provided at the end of this guide.
Notes
INSIGHT 4K zoom lenses are
capable of covering throw distances
greater than forty metres.
The minimum throw of the zoom
lenses changes depending on the
throw ratio used.
Throw distance is measured from
the front of the lens. Lens extension
values give the distance from the
front of the lens to the front cover
of the projector. Lens extension is
measured when the lens is focused
at infinity, and fully extended.
For information about individual lens
the end of this document.
To choose a lens using lens charts,
the end of this guide.
