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Digital Projection Projector HC M Vision Cine 400 User Manual

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Page 21

Rev A December 2010 Page 2.3
Digital Projection M-Vision Cine 230, Cine 260, Cine 400 User Manual 2. Installation

Examples of 4:3 images displayed with different aspect ratio settings
The 4:3 setting is best, unless there is some specific reason for wantin\
g the smaller 
Native image, for instance, to maintain the same scale as other images f\
rom the 
same source.
If you are using an anamorphic lens, the 4:3 Narrow setting should be us\
ed. The 
lens will stretch the image to the correct width....

Page 22

Page 2.4 Rev A December 2010
2. Installation Digital Projection M-Vision Cine 230, Cine 260, Cine 400 User Manual

Diagonal screen sizes
Screen sizes are sometimes specified by their diagonal size (D) in inc\
hes. When 
dealing with large screens and projection distances at different aspect ratios, it is 
more convenient to measure screen width (W) and height (H).
The example calculations below show how to convert diagonal sizes in inc\
hes into 
width and height, at various aspect ratios.
2.35:1...

Page 23

Rev A December 2010 Page 2.5
Digital Projection M-Vision Cine 230, Cine 260, Cine 400 User Manual 2. Installation

Fitting the image to the screen
It is important that your screen is of sufficient height and width to display images at 
all the aspect ratios you are planning to use.
Use the conversion chart, or the sample calculations below to check that\
 you are 
able to display the full image on your screen. If you have insufficient height or width, 
you will have to reduce the overall image size in...

Page 24

Page 2.6 Rev A December 2010
2. Installation Digital Projection M-Vision Cine 230, Cine 260, Cine 400 User Manual

Positioning the screen and projector
Optimum viewing position
For optimum viewing, the screen should be a flat surface perpendicular t\
o the floor. 
The bottom of the screen should be 1.2m (4 feet) above the floor and t\
he front row 
of the audience should not have to look up more than 30° to see the t\
op of the 
screen.
The distance between the front row of the audience and the screen...

Page 25

Rev A December 2010 Page 2.7
Digital Projection M-Vision Cine 230, Cine 260, Cine 400 User Manual 2. Installation

Screen size vs throw distance
Throw distance is the distance measured from the front of the projector \
to the 
screen. This is an important calculation in any projector installation as it det\
ermines 
whether or not you have enough room to install your projector with the d\
esired 
screen size, and if your image will be the right size for your screen.
Calculating screen width and throw...

Page 26

Page 2.8 Rev A December 2010
2. Installation Digital Projection M-Vision Cine 230, Cine 260, Cine 400 User Manual

NotesLens charts for the short throw zoom lens
example
You can display a 16:9 image with a screen width of 3m at a distance of 5\
m, but 
for a screen width of 3.5m, you will need to use the 0.8x converter lens\
.
•
Throw distance
Screen width
        1       2       3       4       5       6       7       8       9      10     11     12 metres
        3       7      10     13     16     20...

Page 27

Rev A December 2010 Page 2.9
Digital Projection M-Vision Cine 230, Cine 260, Cine 400 User Manual 2. Installation

Notes
 Note that for the long throw 
lens, there is some overlap 
between the range available 
using the converter lenses and 
that using no converter lens.
Lens charts for the long throw zoom lens
example
You can display a 4:3 image with a screen width of 3m at a distance of 6m\
, but 
for a screen width of 2m, you will need to use the 1.25x converter lens.\
•
Screen width
        1...

Page 28

Page 2.10 Rev A December 2010
2. Installation Digital Projection M-Vision Cine 230, Cine 260, Cine 400 User Manual

Shifting the image
Ideally, the projector should be positioned perpendicular to the screen.
The normal position for the projector is at the centre of the screen. Ho\
wever, with 
the zoom lenses, you can set the projector above or below the centre, or\
 to one 
side, and adjust the image using the Lens shift controls on the top of the projector 
to maintain a geometrically correct image....

Page 29

Rev A December 2010 Page 2.11
Digital Projection M-Vision Cine 230, Cine 260, Cine 400 User Manual 2. Installation

+ 0.6 H
– 0.6 H
– 0.15 W+ 0.15 W
Lens shift example (1.85 - 2.4 : 1 zoom lens)Notes 

Page 30

Page 2.12 Rev A December 2010
2. Installation Digital Projection M-Vision Cine 230, Cine 260, Cine 400 User Manual

Mounting the projector
The four adjustable feet under the chassis allow the projector to be low\
ered onto a 
flat surface without any danger of hands being trapped between the botto\
m frame 
and the surface.
Ceiling mounting
The projector is designed to be used on a flat surface, but it can be su\
spended 
from a ceiling. Three M4 mounting holes with a 0.7mm pitch are provided under the...
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