Digital Projection Projector HIGHlite 740 Series User Manual

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Reference Guide
ASPECT RATIOS EXPLAINED
Aspect ratio examples for DMD™ resolution WUXGA (continued)
Source: 16:9
1Unused screen areas
2Cropped parts of the image
Notes
Aspect Ratio: Source
Aspect Ratio: Fill Display
Aspect Ratio: Fill & Crop
2
1
1
2
   
Digital Projection HIGHlite 740 Series 
Rev I Februar y 2015  

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Reference Guide
ASPECT RATIOS EXPLAINED
Aspect ratio examples for DMD™ resolution WUXGA (continued)
Source: 16:10 (native resolution)
Notes
Aspect Ratio: Source / Fill Display / Fill & Crop
   
Digital Projection HIGHlite 740 Series 
Rev I Februar y 2015  

page 104
Reference Guide
ASPECT RATIOS EXPLAINED
Aspect ratio example: TheaterScope
The TheaterScope setting is used in combination with an anamorphic lens to restore 2.35:\
1 images packed into a 16:9 frame. Such images 
are projected with black lines at the top and bottom of the 16:9 screen \
to make up for the difference in aspect ratios.
Without an anamorphic lens and without the TheaterScope setting applied, a 16:9 source containing a 2.35:1 image lo\
oks like this:
If we change the setting to...

page 105
Reference Guide
FRAME RATES AND PULLDOWNS EXPLAINED
Frame Rates And Pulldowns Explained
Interlaced and progressive scan
A progressive scan is a method of updating the image by drawing all the lines of each fram\
e in a sequence. In contrast, interlaced 
video alternately scans odd and even lines. In old analog TV interlacing was commonly used as a way of doubling the refresh rate w\
ithout 
consuming extra bandwidth.
The following artifacts are common with interlaced video:
• edge tear...

page 106
Reference Guide
FRAME RATES AND PULLDOWNS EXPLAINED
Pulldowns - conversion into destination formats
Pulldowns are a method of converting a 24p source into a different destination format by adding extra frames to the source.
2:3 (nor mal) pulldown
This method is used to convert a 24p source (film) into a 60i destination (NTSC video) by adding two extra fields for every four frames, 
effectively increasing the frame rate to 30 fps. The frame is split into fields and then two fields are repeated...

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Reference Guide
FRAME RATES AND PULLDOWNS EXPLAINED
2:3:3:2 (advanced) pulldown
This method is very similar to the normal pulldown. Unlike the normal pu\
lldown method, the resulting 30 fps video sequence contains only one 
frame containing fields from two different source frames.
The advantage of this method is that it is easier to reverse, if necessa\
ry.
Original film, 
24 fps Field 1 (odd)
Field 2 (even)Resulting video, 
30 fps
Notes
 The projector will use advanced 
pulldown on suitable...

page 108
Reference Guide
APPENDIX A: LENS PART NUMBERS
Appendix A: Lens Part Numbers
Throw ratiosLens extension (±2%)Throw distance rangePart number
0.77 : 1 fixed lens80 mm (3.2 in)1.3 - 2.5 m (4.3 - 8.2 ft)110-808
1.16 : 1 fixed lens54 mm (2.1 in)1.4 - 6.2 m (4.6 - 20.3 ft)110-809
1.45 - 1.74 : 1 zoom lens24 mm (1.0 in)1.8 - 9.3 m (5.9 - 30.5 ft)110-803
1.74 - 2.17 : 1 zoom lens02.2 - 11.8 m (7.2 - 38.7 ft)110-804
2.17 - 2.90 : 1 zoom lens02.7 - 15.4 m (8.9 - 50.5 ft)110-805
2.90 - 4.34 : 1 zoom...

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Reference Guide
APPENDIX B: LENS CHARTS
Appendix B: Lens Char ts
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...

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Reference Guide
APPENDIX B: LENS CHARTS
 How to find the right lens chart
Charts are shown in order of DMD resolution, as follows:
• 1080p
• WUXGA
For each resolution, the available lenses are shown in different charts depending on applicable throw ratio corrections (TRC).
For each resolution, lens charts are arranged in ascending TRC order, starting from full width images, where TRC=1.
All full width images are grouped together. 1080p and WUXGA are shown in the same chart.
1080p (1920 x 1080...

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Reference Guide
APPENDIX B: LENS CHARTS
WUXGA (1920 x 1200 pixels)
Full width images 
Formats that fit the width of the DMD™ without applying a throw ratio correction (TRC) include:
• 2.35:1 (Scope) 1920 x 817 pixels       TRC = 1
• 1.85:1 (Flat)   1920 x 1037 pixels     TRC = 1
• 1.78:1 (16:9)   1920 x 1080 pixels     TRC = 1
• 1.66:1 (Vista) 1920 x 1156 pixels     TRC = 1
• 1.6:1 (16:10)   1920 x 1200 pixels (native resolution) TRC = 1
Full height images
A throw ratio correction (TRC) has been...