page 80
Digital Projection HIGHlite 740 Series
Reference Guide
CHOOSING A LENS
Rev I February 2015
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
Throw distance range
0.77 : 1 fixed lens
1.3 - 2.5 m (4.3 - 8.2 ft)
1.16 : 1 fixed lens
1.4 - 6.2 m (4.6 - 20.3 ft)
1.45 - 1.74 : 1 zoom lens
1.8 - 9.3 m (5.9 - 30.5 ft)
1.74 - 2.17 : 1 zoom lens
2.2 - 11.8 m (7.2 - 38.7 ft)
2.17 - 2.90 : 1 zoom lens
2.7 - 15.4 m (8.9 - 50.5 ft)
2.90 - 4.34 : 1 zoom lens
3.6 - 22.5 m (11.8 - 73.8 ft)
4.34 - 6.76 : 1 zoom lens
5.5 - 35 m (18 - 115 ft)
To choose a lens, either calculate the
throw ratio
required, or use the
lens charts
provided within this section.
Notes
For information about individual lens
part numbers, see
Appendix A
at
the end of this document.
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