More on Projection

[Derek Gee <73157.2172@xxxxxxxxxxxxxx>]

Michael wrote:
>I would argue that it's nearly impossible to project *with* glasses and 
>have success. One needs to see *both* images simultaneously, and make 
>split-second adjustments accordingly.

George wrote:
>Finally!  Thanks Michael for saying this... I cannot believe that Derek
>does the projection *with his polarizing glasses on*!!!!  There is no way
>to see any misalignments through the polarizing glasses... When you feel
>like you want to throw up because of excessive vertical misalignment and
>strain in you eyes and brain, then it's a bit too late.  I always look over
>my polarizing glasses to check alignment and through them to enjoy the
>projected image.  Being a projectionist is hard work and lots of
>responsiblity.  Unless you are running your own (perfectly aligned) show,
>there is no time to enjoy the projection.

Why would either of you be surprised that I do it that way?  Michael argues
that it's "nearly impossible".  Balderdash!!!  I successfully do it all the
time.  Dr. T has even complimented me on my projection.  If you set the
projector to an alignment slide as excellent as the Reel-3D mounting gauge,
you do not need to make many modifications to projection controls, provided
the entrant hasn't completely ignored a gauge.  The alignment is set up 
without 3-D glasses being worn - after inital set-up I use glasses.  From
experience, I can spot various types of misalignments most of the time.
When I know I've made a significant adjustment for a single slide, I 
re-insert the gauge and correct before the next entered slide is shown.
This way, everyone gets a fair shake when being judged.  

As noted in George's comments, being a projectionist is hard work,
and occasionally I get caught up in some other problem while projecting.
On these occasions, I rely on the spotters in the back of the room as
well as members of the audience to make me aware of projection problems.
I can assure you that in twelve years of projecting 3-D, the complaints
have been few.  I also keep my eyeglass prescription current, and I use
custom-made prescription 3-D glasses with polarizers much clearer and 
selective than even the best plastic framed glasses I have tried.
These are the things I use to put on a good show.  My position is not that
you couldn't take off your glasses to do alignment - you obviously can.
I just don't see any need to, provided set-up is done correctly and 
projector settings are checked on throughout.  

                                     Derek Gee
                                     Disgruntled Projectionist
                                     Detroit Stereographic Society


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