Digital Projection Projector HIGHlite Cine 330 3D Series User Manual

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Reference Guide
CHOOSING A LENS
Useful lens calculations
Examples of  lens calculations
Use the information in Appendix A at the end of this Reference Guide to identify the exact lens needed.
Image size 1024 x 768 pixels, screen width 6.5m, throw distance 18m from\
 the outer end of the lens.
• Throw ratio factor (TRF) = 1920 / 1024 = 1.875
• Throw ratio required = 18 / (6.5 x 1.875) = 1.48
Choose the 1.45 - 1.75 : 1 zoom lens.
Throw distance
Throw ratio x TRF
Screen width =Screen width x Throw ratio x TRF
Throw distance =
Notes
  The throw ratio for a particular lens 
is fixed, but assumes that the image 
fills the width of the DMD.
  For images that do not fill the width 
of the DMD, the throw ratio is 
effectively increased. To correct for 
this in these calculations, a throw 
ratio factor (TRF) is used.
 The DMD width is 1920.
 Throw distance calculations are 
based on the distance from the outer 
end of the lens, which will vary from 
lens to lens. Once a lens has been 
chosen, the figures can be checked 
using the lens extension values 
given in  Appendix A at the end of 
this document.
DMD width
Image width in pixels
TRF =Throw distance
Screen width x TRF
Throw ratio =
   
    
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Reference Guide
CHOOSING A LENS
Lens charts
How to use the lens charts
The lens charts on the following pages provide a quick guide to the type\
 of 
lens needed for a particular projector.
To use the lens charts, you need the following information:
• The DMD resolution of your projector
• The distance between the projector and the screen (throw distance)
• The maximum width of your screen
In the chart for the required DMD resolution, find the point where the throw 
distance corresponds to the screen width, as shown in the example below.
Example
For a 1080p projector with
• throw distance 14 m, and
• screen width 3.5 m,
the correct lens would be number 6 in the chart.
Notes
 For information about individual lens 
part numbers, see Appendix A at 
the end of this document.
12
1Screen width
2Throw distance
1234567
1 m (3.3 ft) 2 m (6.6 ft) 3 m (9.8 ft)
4 m (13.1 ft) 5 m (16.4 ft) 6 m (19.7 ft)
5 m 
(16 ft) 10 m 
(33 ft) 15 m 
(49 ft) 20 m 
(66 ft) 25 m 
(82 ft) 30 m 
(98 ft) 35 m 
(115 ft) 40 m 
(131 ft)
Screen width
Throw distance
   
    
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Reference Guide
CHOOSING A LENS
1080p (1920 x 1080 pixels)
Full width images
Formats that fit the width of the DMD™ without applying a throw ratio factor (TRF) include:
• 2.35:1 (Scope) 1920 x 817 pixels       TRF = 1
• 1.85:1 (Flat)   1920 x 1037 pixels     TRF = 1
• 1.78:1 (16:9)   1920 x 1080 pixels (native resolution) TRF = 1
Full height images
A throw ratio factor (TRF) has been applied to the following charts:
• 1.25:1 (5:4)   1350 x 1080 pixels  TRF = 1.42
• 1.33:1 (4:3)   1440 x 1080 pixels TRF = 1.33 
• 1.6:1 (16:10)   1728 x 1080 pixels TRF = 1.11 
• 1.66:1 (Vista) 1792 x 1080 pixels TRF = 1.07 
Notes
 For information about individual lens 
part numbers, see Appendix A at 
the end of this document.
   
    
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Reference Guide
CHOOSING A LENS
DMD™ resolution 1080p, full DMD™ width images
For 1080p, full width images are 2.35:1 (Scope), 1.85:1 (Flat) 1.78:\
1 (native).
10.77 : 1 fixed lens
21.16 : 1 fixed lens
31.45 - 1.74 : 1 zoom lens
41.74 - 2.17 : 1 zoom lens
52.17 - 2.90 : 1 zoom lens
62.90 - 4.34 : 1 zoom lens
74.34 - 6.76 : 1 zoom lens
Notes
 This chart has a TRF of 1.0, for use 
with the following images:
 For information about individual lens 
part numbers, see Appendix A at 
the end of this document.
 
2.35:1 (Scope), 1.85:1 (Flat)  and 1.78:1 (native)
Throw distance
Screen width
10 m 
(33 ft) 20 m 
(66 ft) 30 m 
(98 ft) 40 m 
(131 ft)
5 m 
(16 ft) 15 m 
(49 ft) 25 m 
(82 ft) 35 m 
(115 ft)
1 m (3.3 ft) 2 m (6.6 ft) 3 m (9.8 ft)
4 m (13.1 ft) 5 m (16.4 ft) 6 m (19.7 ft)
1234567
   
    
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Reference Guide
CHOOSING A LENS
DMD™ resolution 1080p, 1.25:1 images
10.77 : 1 fixed lens
21.16 : 1 fixed lens
31.45 - 1.74 : 1 zoom lens
41.74 - 2.17 : 1 zoom lens
52.17 - 2.90 : 1 zoom lens
62.90 - 4.34 : 1 zoom lens
74.34 - 6.76 : 1 zoom lens
Notes
 This chart has a TRF of 1.42, for use with the following images:
 For information about individual lens 
part numbers, see Appendix A at 
the end of this document.
1.25:1 (5:4)
Throw distance
Screen width
10 m 
(33 ft) 20 m 
(66 ft) 30 m 
(98 ft) 40 m 
(131 ft)
5 m 
(16 ft) 15 m 
(49 ft) 25 m 
(82 ft) 35 m 
(115 ft)
1 m (3.3 ft) 2 m (6.6 ft) 3 m (9.8 ft)
4 m (13.1 ft) 5 m (16.4 ft) 6 m (19.7 ft)
1234567
   
    
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Reference Guide
CHOOSING A LENS
DMD™ resolution 1080p, 1.33:1 images
10.77 : 1 fixed lens
21.16 : 1 fixed lens
31.45 - 1.74 : 1 zoom lens
41.74 - 2.17 : 1 zoom lens
52.17 - 2.90 : 1 zoom lens
62.90 - 4.34 : 1 zoom lens
74.34 - 6.76 : 1 zoom lens
Notes
 This chart has a TRF of 1.33, for use 
with the following images:
 For information about individual lens 
part numbers, see Appendix A at 
the end of this document.
1.33:1 (4:3)
Throw distance
Screen width
10 m 
(33 ft) 20 m 
(66 ft) 30 m 
(98 ft) 40 m 
(131 ft)
5 m 
(16 ft) 15 m 
(49 ft) 25 m 
(82 ft) 35 m 
(115 ft)
1 m (3.3 ft) 2 m (6.6 ft) 3 m (9.8 ft)
4 m (13.1 ft) 5 m (16.4 ft) 6 m (19.7 ft)
1234567
   
    
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CHOOSING A LENS
DMD™ resolution 1080p, 1.6:1 images
10.77 : 1 fixed lens
21.16 : 1 fixed lens
31.45 - 1.74 : 1 zoom lens
41.74 - 2.17 : 1 zoom lens
52.17 - 2.90 : 1 zoom lens
62.90 - 4.34 : 1 zoom lens
74.34 - 6.76 : 1 zoom lens
Notes
 This chart has a TRF of 1.11, for use 
with the following images:
 For information about individual lens 
part numbers, see Appendix A at 
the end of this document.
1.6:1 (16:10)
Throw distance
Screen width
10 m 
(33 ft) 20 m 
(66 ft) 30 m 
(98 ft) 40 m 
(131 ft)
5 m 
(16 ft) 15 m 
(49 ft) 25 m 
(82 ft) 35 m 
(115 ft)
1 m (3.3 ft) 2 m (6.6 ft) 3 m (9.8 ft)
4 m (13.1 ft) 5 m (16.4 ft) 6 m (19.7 ft)
1234567
   
    
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CHOOSING A LENS
DMD™ resolution 1080p, 1.66:1 images
10.77 : 1 fixed lens
21.16 : 1 fixed lens
31.45 - 1.74 : 1 zoom lens
41.74 - 2.17 : 1 zoom lens
52.17 - 2.90 : 1 zoom lens
62.90 - 4.34 : 1 zoom lens
74.34 - 6.76 : 1 zoom lens
Notes
 This chart has a TRF of 1.07, for use 
with the following images:
 For information about individual lens 
part numbers, see Appendix A at 
the end of this document.
1.66:1 (Vista)
Throw distance
Screen width
10 m 
(33 ft) 20 m 
(66 ft) 30 m 
(98 ft) 40 m 
(131 ft)
5 m 
(16 ft) 15 m 
(49 ft) 25 m 
(82 ft) 35 m 
(115 ft)
1 m (3.3 ft) 2 m (6.6 ft) 3 m (9.8 ft)
4 m (13.1 ft) 5 m (16.4 ft) 6 m (19.7 ft)
1234567
   
    
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Reference Guide
POSITIONING THE IMAGE
Positioning The Image
The normal position for the projector is at the centre of the screen. Ho\
wever, you can set the projector above or below the centre, or to one side, 
and adjust the image using the Lens shift feature (known as rising and falling front) to maintain a geometrically correct image.
Notes
 For more information on shifting 
the lens, see Control menu  in the 
Operating Guide .
 Whenever possible, position the 
projector so that the lens is centered 
for the highest quality image.
Shifting the lens up (rising front)
Centered lens
Shifting the lens down (falling front)
   
    
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Reference Guide
POSITIONING THE IMAGE
Positioning The Image (continued)
Any single adjustment outside the ranges specified on the following page may result in an unacceptable level of distortion, particularly at the 
corners of the image, due to the image passing through the periphery of \
the lens optics.
If the lens is to be shifted in two directions combined, the maximum ran\
ge without distortion will be somewhat less, as can be seen in the 
illustrations below.
Notes
 For more information on shifting 
the lens, see Control menu  in the 
Operating Guide .
Full horizontal or vertical shift Combined shift is reduced
   
    
Digital Projection HIGHlite Cine 330 3D Series 
Rev E August 2014