P3D Re: by George

[Richard Twichell <rmt@xxxxxxxxxxxxxxx>]

Welcome back, Dr. T!  Things were getting a little quiet around here...
you write:  

> I was especially looking forward to
>getting into the submarine.  I figured that my RBT S1's smaller
>interocular distance will be an advantage in the narrow corridors.
>We'll see. 

George!  You already own the perfect camera for submarine interiors:  
The Super Duplex!  Be sure to bring it to NSA -2001 in Buffalo, where 
the Fleet Sub "Croaker" is berthed at the naval museum.

On another topic George writes:

>The View-Master Stereomatic projector has another "convenient" feature
>that makes control of the stereo window in projection nearly
>impossible:  The focus and convergence are linked so when you focus
>the right and left images slide w/respect to each other.  This is very
>annoying!  If you have an image with too wide separation that causes
>eyestrain, you cannot bring the two images closer together because
>they will then be out of focus!

To quote the doctor in the old joke, if it hurts when you do that, don't 
do that!

Mounting for projection, in any format, should be of a consistency and 
accuracy that adjustments during the show are unnecessary.  A reasonable 
though small amount of adjustment is possible in mounting VM chips but 
the VM system creates accurate windows, during shooting, in almost all 
cases.  The exception might be sequential hypers, but they too can be 
corrected by adding a small toe-in.  Of course for close-ups, the 
close-up attachments are prismatic, correcting the window by adding 
"optical toe-in."  

Dick Twichell