P3D Re: my 2 cents worth on adjusting projectors

["Dr. George A. Themelis" <DrT-3d@xxxxxxxxxxxxxxxxxxxxxxxxxxx>]

I had no idea that this issue was so important to have members dropping
off PSSP (Potomac Stereo Society of Stereo Photographers).  Because in 
my 4 years in Detroit and one year in Cleveland, it has not been an issue.
So maybe perhaps it is an issue only the clubs that adjust the projector
between slides?  (just a thought...)

>" Of course, this means
>that you CANNOT mount to eliminate ghosting, because the mounting would
>have to be different for different screen sizes..."
>Bob Aldridge
   
>THANK YOU!  THANK YOU!

I think you are getting too excited here.  What Bob is saying is correct.
So you cannot eliminate ghosting by mounting IF the slide will be projected
in screens of very different sizes.  But if you mount the sunset at
window level, it will be much better than if you mount it at infinity,
no matter what size of screen you are using.

Let's move to the next question:  Does ghosting need to be eliminated
by adjusting the projector?  I don't know what Bob says about this, but I
say, NO.  I believe that you should not adjust the projector to eliminate
ghosting.  If the nature of the image is such that it displays severe and
distracting ghosting, it should not be projected.

Have you heard the expression: "This slide does not project well?", or
"this slide looks better in a viewer than in projection?"  So we are
accepting the fact that there are slides that don't look very good in
projection.  In the list of reasons for slides not to project well ("too
dark" is one) add "severe ghosting" and we are done.

>the need to make minor adjustments during projection is
>almost unavoidable.  The most important word in that sentence is "MINOR". 

As I have said before, MINOR = NOT NECESSARY.

>I know that this may be far from the last word on this, but I think IN MY
>OPINION AND LETS NOT GET ANY FLAME WARS GOING HERE its time for the Mounting
>Nazis to calm down, chill out, get a life, and learn to live and let live.

Do you count yourself in the "Mounting Nazis" group?  I think you should 
because you are expressing a very strong opinion here.

All I care about is for people to have a good time viewing 3d projection.
Adjusting the projector between slides will give people (especially 
newcomers) a headache and turn them off 3d.  That's the only danger.
Other than that, I "don't give a damn" what you people do in your
meetings.

Cheers! -- George Themelis


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