Digital Projection M-vision 1080p-260 User Manual

Rev A May 2010 Page 2.3
Digital Projection M-Vision 1080p-260 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 wanting the smaller 
Native image, for instance, to maintain the same scale as other images from the 
same source.
If you are using an anamorphic lens, the 4:3 Narrow setting should be used.  The 
lens will stretch the image to the correct width.
Examples of 2.35:1 images...

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2. Installation  Digital Projection M-Vision 1080p-260 User Manual

Diagonal screen sizes
Screen sizes are sometimes specified by their diagonal size (D) in inches. 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 (Scope) 
W = D x 0.92in  (D x...

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Digital Projection M-Vision 1080p-260 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 order to display the full...

Page 2.6  Rev A May 2010
2. Installation  Digital Projection M-Vision 1080p-260 User Manual

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

Rev A May 2010 Page 2.7
Digital Projection M-Vision 1080p-260 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 determines 
whether or not you have enough room to install your projector with the desired 
screen size, and if your image will be the right size for your screen.
Calculating screen width and throw distance
Throw Distance  =...

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2. Installation  Digital Projection M-Vision 1080p-260 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 5m, 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     23     26     30...

Rev A May 2010 Page 2.9
Digital Projection M-Vision 1080p-260 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       2       3       4       5...

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2. Installation  Digital Projection M-Vision 1080p-260 User Manual

Notes
 If the projector is fitted with the 
fixed 0.73:1 lens then there are 
no mechanical controls for lens 
shift.
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. However , you 
can set the projector above or below the centre, or to one side, and adjust the image 
using the Lens shift controls on...

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Digital Projection M-Vision 1080p-260 User Manual  2. Installation

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

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2. Installation  Digital Projection M-Vision 1080p-260 User Manual

Notes
 For more detailed information 
about using the menus, see 
section 4. Controlling the 
projector.
 Do not try to stack more than 
three projectors.
 When stacking projectors, 
the stack MUST be vertical, to 
ensure that the stresses are 
distributed to all four chassis 
corners.
 Make sure that the surface, 
ceiling or rigging that is 
to support the projector is 
capable of supporting the 
combined...