Do I need to worry about the dimensions of the screen?

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I am thinking about getting an 80 x 60 in screen.  I can adjust the image
size of the projector to fit that, am I correct?  There doesn't seem to be a
"best size" specified for the image on the projectors I looked at.


Thanks.




Re: Do I need to worry about the dimensions of the screen?

>I am thinking about getting an 80 x 60 in screen.  I can adjust the image
>size of the projector to fit that, am I correct?  There doesn't seem to be
>a "best size" specified for the image on the projectors I looked at.

CRT Projectors seem to be designed with specific screen sizes in mind -
e.g., my (admittedly older) Sony VPH-1030 was designed for either a 72" or
100" (diagonal) screen, other sizes require complex internal adjustment.
LCD Projectors are more flexible, minimum size depends on how closely you
can focus, maximum size depends on how many lumens you have.

On a more practical note, ideal screen size really depends on viewing
distance. While it's initially tempting to build a screen as large as
possible, you CAN get too large, so that you eyes and neck get tired just
following the motion across the screen (been there, done that).  I don't
know if there's been any serious scientific study of the subject, but my own
informal experimentation indicates the maximum comfortable screen size -
measured diagonally and based on a 4:3 aspect ratio - is about 0.625x the
viewing distance.

                                            - FM -




Re: Do I need to worry about the dimensions of the screen?
On Mon, 06 Dec 2004 01:24:55 GMT, "Bradley Burton"

>I am thinking about getting an 80 x 60 in screen.  I can adjust the image
>size of the projector to fit that, am I correct?  There doesn't seem to be a
>"best size" specified for the image on the projectors I looked at.
>
>
>Thanks.
>

80x60 is what I am using and I love it.  I like watching a lot of old
movies, especially musicals, from the 40's and 50's which is well
suited to the 4:3 aspect ratio or the 80x60 screen.  I also hook my
computer to it to browse the Internet or play games, like Flight
Simulator.  The only disconcerting thing is when watching Hi-Def
signals and DVD's which are usually the 16:9 aspect ratio.  There are
black bars on top and bottom of the image which you will see from time
to time on regular TV where the program is letter boxed.

As far as fitting the image to the screen, that would matter what
projector you purchased.  Each projector has a throw distance which
tells you for a given image size, say 80x60, the distance the
projector is mounted from the screen.  You will have a little latitude
with the zoom control.

This is a good source for that info. You can select a model projector
and use the projector calculator to determine mount location.

http://www.projectorcentral.com/projection-calculator.cfm

Here is an article on the 4:3 or 15:9 debate:

http://www.projectorcentral.com/formats.htm

Make sure to read this before buying any one particular format.



Rich M.


Re: Do I need to worry about the dimensions of the screen?

>Here is an article on the 4:3 or 15:9 debate:

Make that 16:9.


Rich M.


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